diff --git a/vendor/manifest b/vendor/manifest
index 5a328f4dc..89b07dcdd 100644
--- a/vendor/manifest
+++ b/vendor/manifest
@@ -70,7 +70,7 @@
 		{
 			"importpath": "github.com/spf13/pflag",
 			"repository": "https://github.com/spf13/pflag",
-			"revision": "c7e63cf4530bcd3ba943729cee0efeff2ebea63f",
+			"revision": "2300d0f8576fe575f71aaa5b9bbe4e1b0dc2eb51",
 			"branch": "master"
 		},
 		{
diff --git a/vendor/src/github.com/spf13/pflag/README.md b/vendor/src/github.com/spf13/pflag/README.md
index 08ad94565..3001fcd2b 100644
--- a/vendor/src/github.com/spf13/pflag/README.md
+++ b/vendor/src/github.com/spf13/pflag/README.md
@@ -1,4 +1,6 @@
 [![Build Status](https://travis-ci.org/spf13/pflag.svg?branch=master)](https://travis-ci.org/spf13/pflag)
+[![Go Report Card](https://goreportcard.com/badge/github.com/spf13/pflag)](https://goreportcard.com/report/github.com/spf13/pflag)
+[![GoDoc](https://godoc.org/github.com/spf13/pflag?status.svg)](https://godoc.org/github.com/spf13/pflag)
 
 ## Description
 
@@ -106,9 +108,9 @@ that give one-letter shorthands for flags. You can use these by appending
 var ip = flag.IntP("flagname", "f", 1234, "help message")
 var flagvar bool
 func init() {
-    flag.BoolVarP("boolname", "b", true, "help message")
+	flag.BoolVarP(&flagvar, "boolname", "b", true, "help message")
 }
-flag.VarP(&flagVar, "varname", "v", 1234, "help message")
+flag.VarP(&flagVal, "varname", "v", "help message")
 ```
 
 Shorthand letters can be used with single dashes on the command line.
@@ -268,8 +270,8 @@ func main() {
 You can see the full reference documentation of the pflag package
 [at godoc.org][3], or through go's standard documentation system by
 running `godoc -http=:6060` and browsing to
-[http://localhost:6060/pkg/github.com/ogier/pflag][2] after
+[http://localhost:6060/pkg/github.com/spf13/pflag][2] after
 installation.
 
-[2]: http://localhost:6060/pkg/github.com/ogier/pflag
-[3]: http://godoc.org/github.com/ogier/pflag
+[2]: http://localhost:6060/pkg/github.com/spf13/pflag
+[3]: http://godoc.org/github.com/spf13/pflag
diff --git a/vendor/src/github.com/spf13/pflag/bool_slice.go b/vendor/src/github.com/spf13/pflag/bool_slice.go
new file mode 100644
index 000000000..5af02f1a7
--- /dev/null
+++ b/vendor/src/github.com/spf13/pflag/bool_slice.go
@@ -0,0 +1,147 @@
+package pflag
+
+import (
+	"io"
+	"strconv"
+	"strings"
+)
+
+// -- boolSlice Value
+type boolSliceValue struct {
+	value   *[]bool
+	changed bool
+}
+
+func newBoolSliceValue(val []bool, p *[]bool) *boolSliceValue {
+	bsv := new(boolSliceValue)
+	bsv.value = p
+	*bsv.value = val
+	return bsv
+}
+
+// Set converts, and assigns, the comma-separated boolean argument string representation as the []bool value of this flag.
+// If Set is called on a flag that already has a []bool assigned, the newly converted values will be appended.
+func (s *boolSliceValue) Set(val string) error {
+
+	// remove all quote characters
+	rmQuote := strings.NewReplacer(`"`, "", `'`, "", "`", "")
+
+	// read flag arguments with CSV parser
+	boolStrSlice, err := readAsCSV(rmQuote.Replace(val))
+	if err != nil && err != io.EOF {
+		return err
+	}
+
+	// parse boolean values into slice
+	out := make([]bool, 0, len(boolStrSlice))
+	for _, boolStr := range boolStrSlice {
+		b, err := strconv.ParseBool(strings.TrimSpace(boolStr))
+		if err != nil {
+			return err
+		}
+		out = append(out, b)
+	}
+
+	if !s.changed {
+		*s.value = out
+	} else {
+		*s.value = append(*s.value, out...)
+	}
+
+	s.changed = true
+
+	return nil
+}
+
+// Type returns a string that uniquely represents this flag's type.
+func (s *boolSliceValue) Type() string {
+	return "boolSlice"
+}
+
+// String defines a "native" format for this boolean slice flag value.
+func (s *boolSliceValue) String() string {
+
+	boolStrSlice := make([]string, len(*s.value))
+	for i, b := range *s.value {
+		boolStrSlice[i] = strconv.FormatBool(b)
+	}
+
+	out, _ := writeAsCSV(boolStrSlice)
+
+	return "[" + out + "]"
+}
+
+func boolSliceConv(val string) (interface{}, error) {
+	val = strings.Trim(val, "[]")
+	// Empty string would cause a slice with one (empty) entry
+	if len(val) == 0 {
+		return []bool{}, nil
+	}
+	ss := strings.Split(val, ",")
+	out := make([]bool, len(ss))
+	for i, t := range ss {
+		var err error
+		out[i], err = strconv.ParseBool(t)
+		if err != nil {
+			return nil, err
+		}
+	}
+	return out, nil
+}
+
+// GetBoolSlice returns the []bool value of a flag with the given name.
+func (f *FlagSet) GetBoolSlice(name string) ([]bool, error) {
+	val, err := f.getFlagType(name, "boolSlice", boolSliceConv)
+	if err != nil {
+		return []bool{}, err
+	}
+	return val.([]bool), nil
+}
+
+// BoolSliceVar defines a boolSlice flag with specified name, default value, and usage string.
+// The argument p points to a []bool variable in which to store the value of the flag.
+func (f *FlagSet) BoolSliceVar(p *[]bool, name string, value []bool, usage string) {
+	f.VarP(newBoolSliceValue(value, p), name, "", usage)
+}
+
+// BoolSliceVarP is like BoolSliceVar, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) BoolSliceVarP(p *[]bool, name, shorthand string, value []bool, usage string) {
+	f.VarP(newBoolSliceValue(value, p), name, shorthand, usage)
+}
+
+// BoolSliceVar defines a []bool flag with specified name, default value, and usage string.
+// The argument p points to a []bool variable in which to store the value of the flag.
+func BoolSliceVar(p *[]bool, name string, value []bool, usage string) {
+	CommandLine.VarP(newBoolSliceValue(value, p), name, "", usage)
+}
+
+// BoolSliceVarP is like BoolSliceVar, but accepts a shorthand letter that can be used after a single dash.
+func BoolSliceVarP(p *[]bool, name, shorthand string, value []bool, usage string) {
+	CommandLine.VarP(newBoolSliceValue(value, p), name, shorthand, usage)
+}
+
+// BoolSlice defines a []bool flag with specified name, default value, and usage string.
+// The return value is the address of a []bool variable that stores the value of the flag.
+func (f *FlagSet) BoolSlice(name string, value []bool, usage string) *[]bool {
+	p := []bool{}
+	f.BoolSliceVarP(&p, name, "", value, usage)
+	return &p
+}
+
+// BoolSliceP is like BoolSlice, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) BoolSliceP(name, shorthand string, value []bool, usage string) *[]bool {
+	p := []bool{}
+	f.BoolSliceVarP(&p, name, shorthand, value, usage)
+	return &p
+}
+
+// BoolSlice defines a []bool flag with specified name, default value, and usage string.
+// The return value is the address of a []bool variable that stores the value of the flag.
+func BoolSlice(name string, value []bool, usage string) *[]bool {
+	return CommandLine.BoolSliceP(name, "", value, usage)
+}
+
+// BoolSliceP is like BoolSlice, but accepts a shorthand letter that can be used after a single dash.
+func BoolSliceP(name, shorthand string, value []bool, usage string) *[]bool {
+	return CommandLine.BoolSliceP(name, shorthand, value, usage)
+}
diff --git a/vendor/src/github.com/spf13/pflag/bool_slice_test.go b/vendor/src/github.com/spf13/pflag/bool_slice_test.go
new file mode 100644
index 000000000..b617dd237
--- /dev/null
+++ b/vendor/src/github.com/spf13/pflag/bool_slice_test.go
@@ -0,0 +1,215 @@
+package pflag
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+	"testing"
+)
+
+func setUpBSFlagSet(bsp *[]bool) *FlagSet {
+	f := NewFlagSet("test", ContinueOnError)
+	f.BoolSliceVar(bsp, "bs", []bool{}, "Command separated list!")
+	return f
+}
+
+func setUpBSFlagSetWithDefault(bsp *[]bool) *FlagSet {
+	f := NewFlagSet("test", ContinueOnError)
+	f.BoolSliceVar(bsp, "bs", []bool{false, true}, "Command separated list!")
+	return f
+}
+
+func TestEmptyBS(t *testing.T) {
+	var bs []bool
+	f := setUpBSFlagSet(&bs)
+	err := f.Parse([]string{})
+	if err != nil {
+		t.Fatal("expected no error; got", err)
+	}
+
+	getBS, err := f.GetBoolSlice("bs")
+	if err != nil {
+		t.Fatal("got an error from GetBoolSlice():", err)
+	}
+	if len(getBS) != 0 {
+		t.Fatalf("got bs %v with len=%d but expected length=0", getBS, len(getBS))
+	}
+}
+
+func TestBS(t *testing.T) {
+	var bs []bool
+	f := setUpBSFlagSet(&bs)
+
+	vals := []string{"1", "F", "TRUE", "0"}
+	arg := fmt.Sprintf("--bs=%s", strings.Join(vals, ","))
+	err := f.Parse([]string{arg})
+	if err != nil {
+		t.Fatal("expected no error; got", err)
+	}
+	for i, v := range bs {
+		b, err := strconv.ParseBool(vals[i])
+		if err != nil {
+			t.Fatalf("got error: %v", err)
+		}
+		if b != v {
+			t.Fatalf("expected is[%d] to be %s but got: %t", i, vals[i], v)
+		}
+	}
+	getBS, err := f.GetBoolSlice("bs")
+	if err != nil {
+		t.Fatalf("got error: %v", err)
+	}
+	for i, v := range getBS {
+		b, err := strconv.ParseBool(vals[i])
+		if err != nil {
+			t.Fatalf("got error: %v", err)
+		}
+		if b != v {
+			t.Fatalf("expected bs[%d] to be %s but got: %t from GetBoolSlice", i, vals[i], v)
+		}
+	}
+}
+
+func TestBSDefault(t *testing.T) {
+	var bs []bool
+	f := setUpBSFlagSetWithDefault(&bs)
+
+	vals := []string{"false", "T"}
+
+	err := f.Parse([]string{})
+	if err != nil {
+		t.Fatal("expected no error; got", err)
+	}
+	for i, v := range bs {
+		b, err := strconv.ParseBool(vals[i])
+		if err != nil {
+			t.Fatalf("got error: %v", err)
+		}
+		if b != v {
+			t.Fatalf("expected bs[%d] to be %t from GetBoolSlice but got: %t", i, b, v)
+		}
+	}
+
+	getBS, err := f.GetBoolSlice("bs")
+	if err != nil {
+		t.Fatal("got an error from GetBoolSlice():", err)
+	}
+	for i, v := range getBS {
+		b, err := strconv.ParseBool(vals[i])
+		if err != nil {
+			t.Fatal("got an error from GetBoolSlice():", err)
+		}
+		if b != v {
+			t.Fatalf("expected bs[%d] to be %t from GetBoolSlice but got: %t", i, b, v)
+		}
+	}
+}
+
+func TestBSWithDefault(t *testing.T) {
+	var bs []bool
+	f := setUpBSFlagSetWithDefault(&bs)
+
+	vals := []string{"FALSE", "1"}
+	arg := fmt.Sprintf("--bs=%s", strings.Join(vals, ","))
+	err := f.Parse([]string{arg})
+	if err != nil {
+		t.Fatal("expected no error; got", err)
+	}
+	for i, v := range bs {
+		b, err := strconv.ParseBool(vals[i])
+		if err != nil {
+			t.Fatalf("got error: %v", err)
+		}
+		if b != v {
+			t.Fatalf("expected bs[%d] to be %t but got: %t", i, b, v)
+		}
+	}
+
+	getBS, err := f.GetBoolSlice("bs")
+	if err != nil {
+		t.Fatal("got an error from GetBoolSlice():", err)
+	}
+	for i, v := range getBS {
+		b, err := strconv.ParseBool(vals[i])
+		if err != nil {
+			t.Fatalf("got error: %v", err)
+		}
+		if b != v {
+			t.Fatalf("expected bs[%d] to be %t from GetBoolSlice but got: %t", i, b, v)
+		}
+	}
+}
+
+func TestBSCalledTwice(t *testing.T) {
+	var bs []bool
+	f := setUpBSFlagSet(&bs)
+
+	in := []string{"T,F", "T"}
+	expected := []bool{true, false, true}
+	argfmt := "--bs=%s"
+	arg1 := fmt.Sprintf(argfmt, in[0])
+	arg2 := fmt.Sprintf(argfmt, in[1])
+	err := f.Parse([]string{arg1, arg2})
+	if err != nil {
+		t.Fatal("expected no error; got", err)
+	}
+	for i, v := range bs {
+		if expected[i] != v {
+			t.Fatalf("expected bs[%d] to be %t but got %t", i, expected[i], v)
+		}
+	}
+}
+
+func TestBSBadQuoting(t *testing.T) {
+
+	tests := []struct {
+		Want    []bool
+		FlagArg []string
+	}{
+		{
+			Want:    []bool{true, false, true},
+			FlagArg: []string{"1", "0", "true"},
+		},
+		{
+			Want:    []bool{true, false},
+			FlagArg: []string{"True", "F"},
+		},
+		{
+			Want:    []bool{true, false},
+			FlagArg: []string{"T", "0"},
+		},
+		{
+			Want:    []bool{true, false},
+			FlagArg: []string{"1", "0"},
+		},
+		{
+			Want:    []bool{true, false, false},
+			FlagArg: []string{"true,false", "false"},
+		},
+		{
+			Want:    []bool{true, false, false, true, false, true, false},
+			FlagArg: []string{`"true,false,false,1,0,     T"`, " false "},
+		},
+		{
+			Want:    []bool{false, false, true, false, true, false, true},
+			FlagArg: []string{`"0, False,  T,false  , true,F"`, "true"},
+		},
+	}
+
+	for i, test := range tests {
+
+		var bs []bool
+		f := setUpBSFlagSet(&bs)
+
+		if err := f.Parse([]string{fmt.Sprintf("--bs=%s", strings.Join(test.FlagArg, ","))}); err != nil {
+			t.Fatalf("flag parsing failed with error: %s\nparsing:\t%#v\nwant:\t\t%#v",
+				err, test.FlagArg, test.Want[i])
+		}
+
+		for j, b := range bs {
+			if b != test.Want[j] {
+				t.Fatalf("bad value parsed for test %d on bool %d:\nwant:\t%t\ngot:\t%t", i, j, test.Want[j], b)
+			}
+		}
+	}
+}
diff --git a/vendor/src/github.com/spf13/pflag/bool_test.go b/vendor/src/github.com/spf13/pflag/bool_test.go
index 3e38a0f4e..a4319e79f 100644
--- a/vendor/src/github.com/spf13/pflag/bool_test.go
+++ b/vendor/src/github.com/spf13/pflag/bool_test.go
@@ -6,7 +6,6 @@ package pflag
 
 import (
 	"bytes"
-	"fmt"
 	"strconv"
 	"testing"
 )
@@ -48,7 +47,7 @@ func (v *triStateValue) String() string {
 	if *v == triStateMaybe {
 		return strTriStateMaybe
 	}
-	return fmt.Sprintf("%v", bool(*v == triStateTrue))
+	return strconv.FormatBool(*v == triStateTrue)
 }
 
 // The type of the flag as required by the pflag.Value interface
diff --git a/vendor/src/github.com/spf13/pflag/count_test.go b/vendor/src/github.com/spf13/pflag/count_test.go
index 716765cba..460d96a6f 100644
--- a/vendor/src/github.com/spf13/pflag/count_test.go
+++ b/vendor/src/github.com/spf13/pflag/count_test.go
@@ -1,13 +1,10 @@
 package pflag
 
 import (
-	"fmt"
 	"os"
 	"testing"
 )
 
-var _ = fmt.Printf
-
 func setUpCount(c *int) *FlagSet {
 	f := NewFlagSet("test", ContinueOnError)
 	f.CountVarP(c, "verbose", "v", "a counter")
diff --git a/vendor/src/github.com/spf13/pflag/flag.go b/vendor/src/github.com/spf13/pflag/flag.go
index b0b0d46f7..0730bd637 100644
--- a/vendor/src/github.com/spf13/pflag/flag.go
+++ b/vendor/src/github.com/spf13/pflag/flag.go
@@ -16,9 +16,9 @@ pflag is a drop-in replacement of Go's native flag package. If you import
 pflag under the name "flag" then all code should continue to function
 with no changes.
 
-	import flag "github.com/ogier/pflag"
+	import flag "github.com/spf13/pflag"
 
-	There is one exception to this: if you directly instantiate the Flag struct
+There is one exception to this: if you directly instantiate the Flag struct
 there is one more field "Shorthand" that you will need to set.
 Most code never instantiates this struct directly, and instead uses
 functions such as String(), BoolVar(), and Var(), and is therefore
@@ -134,14 +134,21 @@ type FlagSet struct {
 	// a custom error handler.
 	Usage func()
 
+	// SortFlags is used to indicate, if user wants to have sorted flags in
+	// help/usage messages.
+	SortFlags bool
+
 	name              string
 	parsed            bool
 	actual            map[NormalizedName]*Flag
+	orderedActual     []*Flag
+	sortedActual      []*Flag
 	formal            map[NormalizedName]*Flag
+	orderedFormal     []*Flag
+	sortedFormal      []*Flag
 	shorthands        map[byte]*Flag
 	args              []string // arguments after flags
 	argsLenAtDash     int      // len(args) when a '--' was located when parsing, or -1 if no --
-	exitOnError       bool     // does the program exit if there's an error?
 	errorHandling     ErrorHandling
 	output            io.Writer // nil means stderr; use out() accessor
 	interspersed      bool      // allow interspersed option/non-option args
@@ -156,7 +163,7 @@ type Flag struct {
 	Value               Value               // value as set
 	DefValue            string              // default value (as text); for usage message
 	Changed             bool                // If the user set the value (or if left to default)
-	NoOptDefVal         string              //default value (as text); if the flag is on the command line without any options
+	NoOptDefVal         string              // default value (as text); if the flag is on the command line without any options
 	Deprecated          string              // If this flag is deprecated, this string is the new or now thing to use
 	Hidden              bool                // used by cobra.Command to allow flags to be hidden from help/usage text
 	ShorthandDeprecated string              // If the shorthand of this flag is deprecated, this string is the new or now thing to use
@@ -194,11 +201,13 @@ func sortFlags(flags map[NormalizedName]*Flag) []*Flag {
 // "--getUrl" which may also be translated to "geturl" and everything will work.
 func (f *FlagSet) SetNormalizeFunc(n func(f *FlagSet, name string) NormalizedName) {
 	f.normalizeNameFunc = n
-	for k, v := range f.formal {
-		delete(f.formal, k)
-		nname := f.normalizeFlagName(string(k))
-		f.formal[nname] = v
+	f.sortedFormal = f.sortedFormal[:0]
+	for k, v := range f.orderedFormal {
+		delete(f.formal, NormalizedName(v.Name))
+		nname := f.normalizeFlagName(v.Name)
 		v.Name = string(nname)
+		f.formal[nname] = v
+		f.orderedFormal[k] = v
 	}
 }
 
@@ -229,10 +238,25 @@ func (f *FlagSet) SetOutput(output io.Writer) {
 	f.output = output
 }
 
-// VisitAll visits the flags in lexicographical order, calling fn for each.
+// VisitAll visits the flags in lexicographical order or
+// in primordial order if f.SortFlags is false, calling fn for each.
 // It visits all flags, even those not set.
 func (f *FlagSet) VisitAll(fn func(*Flag)) {
-	for _, flag := range sortFlags(f.formal) {
+	if len(f.formal) == 0 {
+		return
+	}
+
+	var flags []*Flag
+	if f.SortFlags {
+		if len(f.formal) != len(f.sortedFormal) {
+			f.sortedFormal = sortFlags(f.formal)
+		}
+		flags = f.sortedFormal
+	} else {
+		flags = f.orderedFormal
+	}
+
+	for _, flag := range flags {
 		fn(flag)
 	}
 }
@@ -253,22 +277,39 @@ func (f *FlagSet) HasAvailableFlags() bool {
 	return false
 }
 
-// VisitAll visits the command-line flags in lexicographical order, calling
-// fn for each.  It visits all flags, even those not set.
+// VisitAll visits the command-line flags in lexicographical order or
+// in primordial order if f.SortFlags is false, calling fn for each.
+// It visits all flags, even those not set.
 func VisitAll(fn func(*Flag)) {
 	CommandLine.VisitAll(fn)
 }
 
-// Visit visits the flags in lexicographical order, calling fn for each.
+// Visit visits the flags in lexicographical order or
+// in primordial order if f.SortFlags is false, calling fn for each.
 // It visits only those flags that have been set.
 func (f *FlagSet) Visit(fn func(*Flag)) {
-	for _, flag := range sortFlags(f.actual) {
+	if len(f.actual) == 0 {
+		return
+	}
+
+	var flags []*Flag
+	if f.SortFlags {
+		if len(f.actual) != len(f.sortedActual) {
+			f.sortedActual = sortFlags(f.actual)
+		}
+		flags = f.sortedActual
+	} else {
+		flags = f.orderedActual
+	}
+
+	for _, flag := range flags {
 		fn(flag)
 	}
 }
 
-// Visit visits the command-line flags in lexicographical order, calling fn
-// for each.  It visits only those flags that have been set.
+// Visit visits the command-line flags in lexicographical order or
+// in primordial order if f.SortFlags is false, calling fn for each.
+// It visits only those flags that have been set.
 func Visit(fn func(*Flag)) {
 	CommandLine.Visit(fn)
 }
@@ -373,6 +414,7 @@ func (f *FlagSet) Set(name, value string) error {
 		f.actual = make(map[NormalizedName]*Flag)
 	}
 	f.actual[normalName] = flag
+	f.orderedActual = append(f.orderedActual, flag)
 	flag.Changed = true
 	if len(flag.Deprecated) > 0 {
 		fmt.Fprintf(os.Stderr, "Flag --%s has been deprecated, %s\n", flag.Name, flag.Deprecated)
@@ -416,7 +458,7 @@ func Set(name, value string) error {
 // otherwise, the default values of all defined flags in the set.
 func (f *FlagSet) PrintDefaults() {
 	usages := f.FlagUsages()
-	fmt.Fprintf(f.out(), "%s", usages)
+	fmt.Fprint(f.out(), usages)
 }
 
 // defaultIsZeroValue returns true if the default value for this flag represents
@@ -487,9 +529,76 @@ func UnquoteUsage(flag *Flag) (name string, usage string) {
 	return
 }
 
-// FlagUsages Returns a string containing the usage information for all flags in
-// the FlagSet
-func (f *FlagSet) FlagUsages() string {
+// Splits the string `s` on whitespace into an initial substring up to
+// `i` runes in length and the remainder. Will go `slop` over `i` if
+// that encompasses the entire string (which allows the caller to
+// avoid short orphan words on the final line).
+func wrapN(i, slop int, s string) (string, string) {
+	if i+slop > len(s) {
+		return s, ""
+	}
+
+	w := strings.LastIndexAny(s[:i], " \t")
+	if w <= 0 {
+		return s, ""
+	}
+
+	return s[:w], s[w+1:]
+}
+
+// Wraps the string `s` to a maximum width `w` with leading indent
+// `i`. The first line is not indented (this is assumed to be done by
+// caller). Pass `w` == 0 to do no wrapping
+func wrap(i, w int, s string) string {
+	if w == 0 {
+		return s
+	}
+
+	// space between indent i and end of line width w into which
+	// we should wrap the text.
+	wrap := w - i
+
+	var r, l string
+
+	// Not enough space for sensible wrapping. Wrap as a block on
+	// the next line instead.
+	if wrap < 24 {
+		i = 16
+		wrap = w - i
+		r += "\n" + strings.Repeat(" ", i)
+	}
+	// If still not enough space then don't even try to wrap.
+	if wrap < 24 {
+		return s
+	}
+
+	// Try to avoid short orphan words on the final line, by
+	// allowing wrapN to go a bit over if that would fit in the
+	// remainder of the line.
+	slop := 5
+	wrap = wrap - slop
+
+	// Handle first line, which is indented by the caller (or the
+	// special case above)
+	l, s = wrapN(wrap, slop, s)
+	r = r + l
+
+	// Now wrap the rest
+	for s != "" {
+		var t string
+
+		t, s = wrapN(wrap, slop, s)
+		r = r + "\n" + strings.Repeat(" ", i) + t
+	}
+
+	return r
+
+}
+
+// FlagUsagesWrapped returns a string containing the usage information
+// for all flags in the FlagSet. Wrapped to `cols` columns (0 for no
+// wrapping)
+func (f *FlagSet) FlagUsagesWrapped(cols int) string {
 	x := new(bytes.Buffer)
 
 	lines := make([]string, 0, len(f.formal))
@@ -514,7 +623,7 @@ func (f *FlagSet) FlagUsages() string {
 		if len(flag.NoOptDefVal) > 0 {
 			switch flag.Value.Type() {
 			case "string":
-				line += fmt.Sprintf("[=%q]", flag.NoOptDefVal)
+				line += fmt.Sprintf("[=\"%s\"]", flag.NoOptDefVal)
 			case "bool":
 				if flag.NoOptDefVal != "true" {
 					line += fmt.Sprintf("[=%s]", flag.NoOptDefVal)
@@ -546,12 +655,19 @@ func (f *FlagSet) FlagUsages() string {
 	for _, line := range lines {
 		sidx := strings.Index(line, "\x00")
 		spacing := strings.Repeat(" ", maxlen-sidx)
-		fmt.Fprintln(x, line[:sidx], spacing, line[sidx+1:])
+		// maxlen + 2 comes from + 1 for the \x00 and + 1 for the (deliberate) off-by-one in maxlen-sidx
+		fmt.Fprintln(x, line[:sidx], spacing, wrap(maxlen+2, cols, line[sidx+1:]))
 	}
 
 	return x.String()
 }
 
+// FlagUsages returns a string containing the usage information for all flags in
+// the FlagSet
+func (f *FlagSet) FlagUsages() string {
+	return f.FlagUsagesWrapped(0)
+}
+
 // PrintDefaults prints to standard error the default values of all defined command-line flags.
 func PrintDefaults() {
 	CommandLine.PrintDefaults()
@@ -635,7 +751,7 @@ func (f *FlagSet) VarPF(value Value, name, shorthand, usage string) *Flag {
 
 // VarP is like Var, but accepts a shorthand letter that can be used after a single dash.
 func (f *FlagSet) VarP(value Value, name, shorthand, usage string) {
-	_ = f.VarPF(value, name, shorthand, usage)
+	f.VarPF(value, name, shorthand, usage)
 }
 
 // AddFlag will add the flag to the FlagSet
@@ -655,6 +771,7 @@ func (f *FlagSet) AddFlag(flag *Flag) {
 
 	flag.Name = string(normalizedFlagName)
 	f.formal[normalizedFlagName] = flag
+	f.orderedFormal = append(f.orderedFormal, flag)
 
 	if len(flag.Shorthand) == 0 {
 		return
@@ -733,6 +850,7 @@ func (f *FlagSet) setFlag(flag *Flag, value string, origArg string) error {
 		f.actual = make(map[NormalizedName]*Flag)
 	}
 	f.actual[f.normalizeFlagName(flag.Name)] = flag
+	f.orderedActual = append(f.orderedActual, flag)
 	flag.Changed = true
 	if len(flag.Deprecated) > 0 {
 		fmt.Fprintf(os.Stderr, "Flag --%s has been deprecated, %s\n", flag.Name, flag.Deprecated)
@@ -752,7 +870,7 @@ func containsShorthand(arg, shorthand string) bool {
 	return strings.Contains(arg, shorthand)
 }
 
-func (f *FlagSet) parseLongArg(s string, args []string) (a []string, err error) {
+func (f *FlagSet) parseLongArg(s string, args []string, fn parseFunc) (a []string, err error) {
 	a = args
 	name := s[2:]
 	if len(name) == 0 || name[0] == '-' || name[0] == '=' {
@@ -786,11 +904,11 @@ func (f *FlagSet) parseLongArg(s string, args []string) (a []string, err error)
 		err = f.failf("flag needs an argument: %s", s)
 		return
 	}
-	err = f.setFlag(flag, value, s)
+	err = fn(flag, value, s)
 	return
 }
 
-func (f *FlagSet) parseSingleShortArg(shorthands string, args []string) (outShorts string, outArgs []string, err error) {
+func (f *FlagSet) parseSingleShortArg(shorthands string, args []string, fn parseFunc) (outShorts string, outArgs []string, err error) {
 	if strings.HasPrefix(shorthands, "test.") {
 		return
 	}
@@ -825,16 +943,16 @@ func (f *FlagSet) parseSingleShortArg(shorthands string, args []string) (outShor
 		err = f.failf("flag needs an argument: %q in -%s", c, shorthands)
 		return
 	}
-	err = f.setFlag(flag, value, shorthands)
+	err = fn(flag, value, shorthands)
 	return
 }
 
-func (f *FlagSet) parseShortArg(s string, args []string) (a []string, err error) {
+func (f *FlagSet) parseShortArg(s string, args []string, fn parseFunc) (a []string, err error) {
 	a = args
 	shorthands := s[1:]
 
 	for len(shorthands) > 0 {
-		shorthands, a, err = f.parseSingleShortArg(shorthands, args)
+		shorthands, a, err = f.parseSingleShortArg(shorthands, args, fn)
 		if err != nil {
 			return
 		}
@@ -843,7 +961,7 @@ func (f *FlagSet) parseShortArg(s string, args []string) (a []string, err error)
 	return
 }
 
-func (f *FlagSet) parseArgs(args []string) (err error) {
+func (f *FlagSet) parseArgs(args []string, fn parseFunc) (err error) {
 	for len(args) > 0 {
 		s := args[0]
 		args = args[1:]
@@ -863,9 +981,9 @@ func (f *FlagSet) parseArgs(args []string) (err error) {
 				f.args = append(f.args, args...)
 				break
 			}
-			args, err = f.parseLongArg(s, args)
+			args, err = f.parseLongArg(s, args, fn)
 		} else {
-			args, err = f.parseShortArg(s, args)
+			args, err = f.parseShortArg(s, args, fn)
 		}
 		if err != nil {
 			return
@@ -881,7 +999,41 @@ func (f *FlagSet) parseArgs(args []string) (err error) {
 func (f *FlagSet) Parse(arguments []string) error {
 	f.parsed = true
 	f.args = make([]string, 0, len(arguments))
-	err := f.parseArgs(arguments)
+
+	assign := func(flag *Flag, value, origArg string) error {
+		return f.setFlag(flag, value, origArg)
+	}
+
+	err := f.parseArgs(arguments, assign)
+	if err != nil {
+		switch f.errorHandling {
+		case ContinueOnError:
+			return err
+		case ExitOnError:
+			os.Exit(2)
+		case PanicOnError:
+			panic(err)
+		}
+	}
+	return nil
+}
+
+type parseFunc func(flag *Flag, value, origArg string) error
+
+// ParseAll parses flag definitions from the argument list, which should not
+// include the command name. The arguments for fn are flag and value. Must be
+// called after all flags in the FlagSet are defined and before flags are
+// accessed by the program. The return value will be ErrHelp if -help was set
+// but not defined.
+func (f *FlagSet) ParseAll(arguments []string, fn func(flag *Flag, value string) error) error {
+	f.parsed = true
+	f.args = make([]string, 0, len(arguments))
+
+	assign := func(flag *Flag, value, origArg string) error {
+		return fn(flag, value)
+	}
+
+	err := f.parseArgs(arguments, assign)
 	if err != nil {
 		switch f.errorHandling {
 		case ContinueOnError:
@@ -907,6 +1059,14 @@ func Parse() {
 	CommandLine.Parse(os.Args[1:])
 }
 
+// ParseAll parses the command-line flags from os.Args[1:] and called fn for each.
+// The arguments for fn are flag and value. Must be called after all flags are
+// defined and before flags are accessed by the program.
+func ParseAll(fn func(flag *Flag, value string) error) {
+	// Ignore errors; CommandLine is set for ExitOnError.
+	CommandLine.ParseAll(os.Args[1:], fn)
+}
+
 // SetInterspersed sets whether to support interspersed option/non-option arguments.
 func SetInterspersed(interspersed bool) {
 	CommandLine.SetInterspersed(interspersed)
@@ -920,14 +1080,15 @@ func Parsed() bool {
 // CommandLine is the default set of command-line flags, parsed from os.Args.
 var CommandLine = NewFlagSet(os.Args[0], ExitOnError)
 
-// NewFlagSet returns a new, empty flag set with the specified name and
-// error handling property.
+// NewFlagSet returns a new, empty flag set with the specified name,
+// error handling property and SortFlags set to true.
 func NewFlagSet(name string, errorHandling ErrorHandling) *FlagSet {
 	f := &FlagSet{
 		name:          name,
 		errorHandling: errorHandling,
 		argsLenAtDash: -1,
 		interspersed:  true,
+		SortFlags:     true,
 	}
 	return f
 }
diff --git a/vendor/src/github.com/spf13/pflag/flag_test.go b/vendor/src/github.com/spf13/pflag/flag_test.go
index b294fc768..172d49fc2 100644
--- a/vendor/src/github.com/spf13/pflag/flag_test.go
+++ b/vendor/src/github.com/spf13/pflag/flag_test.go
@@ -333,6 +333,59 @@ func testParse(f *FlagSet, t *testing.T) {
 	}
 }
 
+func testParseAll(f *FlagSet, t *testing.T) {
+	if f.Parsed() {
+		t.Error("f.Parse() = true before Parse")
+	}
+	f.BoolP("boola", "a", false, "bool value")
+	f.BoolP("boolb", "b", false, "bool2 value")
+	f.BoolP("boolc", "c", false, "bool3 value")
+	f.BoolP("boold", "d", false, "bool4 value")
+	f.StringP("stringa", "s", "0", "string value")
+	f.StringP("stringz", "z", "0", "string value")
+	f.StringP("stringx", "x", "0", "string value")
+	f.StringP("stringy", "y", "0", "string value")
+	f.Lookup("stringx").NoOptDefVal = "1"
+	args := []string{
+		"-ab",
+		"-cs=xx",
+		"--stringz=something",
+		"-d=true",
+		"-x",
+		"-y",
+		"ee",
+	}
+	want := []string{
+		"boola", "true",
+		"boolb", "true",
+		"boolc", "true",
+		"stringa", "xx",
+		"stringz", "something",
+		"boold", "true",
+		"stringx", "1",
+		"stringy", "ee",
+	}
+	got := []string{}
+	store := func(flag *Flag, value string) error {
+		got = append(got, flag.Name)
+		if len(value) > 0 {
+			got = append(got, value)
+		}
+		return nil
+	}
+	if err := f.ParseAll(args, store); err != nil {
+		t.Errorf("expected no error, got %s", err)
+	}
+	if !f.Parsed() {
+		t.Errorf("f.Parse() = false after Parse")
+	}
+	if !reflect.DeepEqual(got, want) {
+		t.Errorf("f.ParseAll() fail to restore the args")
+		t.Errorf("Got: %v", got)
+		t.Errorf("Want: %v", want)
+	}
+}
+
 func TestShorthand(t *testing.T) {
 	f := NewFlagSet("shorthand", ContinueOnError)
 	if f.Parsed() {
@@ -398,16 +451,21 @@ func TestParse(t *testing.T) {
 	testParse(GetCommandLine(), t)
 }
 
+func TestParseAll(t *testing.T) {
+	ResetForTesting(func() { t.Error("bad parse") })
+	testParseAll(GetCommandLine(), t)
+}
+
 func TestFlagSetParse(t *testing.T) {
 	testParse(NewFlagSet("test", ContinueOnError), t)
 }
 
 func TestChangedHelper(t *testing.T) {
 	f := NewFlagSet("changedtest", ContinueOnError)
-	_ = f.Bool("changed", false, "changed bool")
-	_ = f.Bool("settrue", true, "true to true")
-	_ = f.Bool("setfalse", false, "false to false")
-	_ = f.Bool("unchanged", false, "unchanged bool")
+	f.Bool("changed", false, "changed bool")
+	f.Bool("settrue", true, "true to true")
+	f.Bool("setfalse", false, "false to false")
+	f.Bool("unchanged", false, "unchanged bool")
 
 	args := []string{"--changed", "--settrue", "--setfalse=false"}
 	if err := f.Parse(args); err != nil {
@@ -946,3 +1004,43 @@ func TestPrintDefaults(t *testing.T) {
 		t.Errorf("got %q want %q\n", got, defaultOutput)
 	}
 }
+
+func TestVisitAllFlagOrder(t *testing.T) {
+	fs := NewFlagSet("TestVisitAllFlagOrder", ContinueOnError)
+	fs.SortFlags = false
+	// https://github.com/spf13/pflag/issues/120
+	fs.SetNormalizeFunc(func(f *FlagSet, name string) NormalizedName {
+		return NormalizedName(name)
+	})
+
+	names := []string{"C", "B", "A", "D"}
+	for _, name := range names {
+		fs.Bool(name, false, "")
+	}
+
+	i := 0
+	fs.VisitAll(func(f *Flag) {
+		if names[i] != f.Name {
+			t.Errorf("Incorrect order. Expected %v, got %v", names[i], f.Name)
+		}
+		i++
+	})
+}
+
+func TestVisitFlagOrder(t *testing.T) {
+	fs := NewFlagSet("TestVisitFlagOrder", ContinueOnError)
+	fs.SortFlags = false
+	names := []string{"C", "B", "A", "D"}
+	for _, name := range names {
+		fs.Bool(name, false, "")
+		fs.Set(name, "true")
+	}
+
+	i := 0
+	fs.Visit(func(f *Flag) {
+		if names[i] != f.Name {
+			t.Errorf("Incorrect order. Expected %v, got %v", names[i], f.Name)
+		}
+		i++
+	})
+}
diff --git a/vendor/src/github.com/spf13/pflag/golangflag.go b/vendor/src/github.com/spf13/pflag/golangflag.go
index b056147fd..c4f47ebe5 100644
--- a/vendor/src/github.com/spf13/pflag/golangflag.go
+++ b/vendor/src/github.com/spf13/pflag/golangflag.go
@@ -6,13 +6,10 @@ package pflag
 
 import (
 	goflag "flag"
-	"fmt"
 	"reflect"
 	"strings"
 )
 
-var _ = fmt.Print
-
 // flagValueWrapper implements pflag.Value around a flag.Value.  The main
 // difference here is the addition of the Type method that returns a string
 // name of the type.  As this is generally unknown, we approximate that with
diff --git a/vendor/src/github.com/spf13/pflag/ip.go b/vendor/src/github.com/spf13/pflag/ip.go
index 88a17430a..3d414ba69 100644
--- a/vendor/src/github.com/spf13/pflag/ip.go
+++ b/vendor/src/github.com/spf13/pflag/ip.go
@@ -6,8 +6,6 @@ import (
 	"strings"
 )
 
-var _ = strings.TrimSpace
-
 // -- net.IP value
 type ipValue net.IP
 
diff --git a/vendor/src/github.com/spf13/pflag/ip_slice.go b/vendor/src/github.com/spf13/pflag/ip_slice.go
new file mode 100644
index 000000000..7dd196fe3
--- /dev/null
+++ b/vendor/src/github.com/spf13/pflag/ip_slice.go
@@ -0,0 +1,148 @@
+package pflag
+
+import (
+	"fmt"
+	"io"
+	"net"
+	"strings"
+)
+
+// -- ipSlice Value
+type ipSliceValue struct {
+	value   *[]net.IP
+	changed bool
+}
+
+func newIPSliceValue(val []net.IP, p *[]net.IP) *ipSliceValue {
+	ipsv := new(ipSliceValue)
+	ipsv.value = p
+	*ipsv.value = val
+	return ipsv
+}
+
+// Set converts, and assigns, the comma-separated IP argument string representation as the []net.IP value of this flag.
+// If Set is called on a flag that already has a []net.IP assigned, the newly converted values will be appended.
+func (s *ipSliceValue) Set(val string) error {
+
+	// remove all quote characters
+	rmQuote := strings.NewReplacer(`"`, "", `'`, "", "`", "")
+
+	// read flag arguments with CSV parser
+	ipStrSlice, err := readAsCSV(rmQuote.Replace(val))
+	if err != nil && err != io.EOF {
+		return err
+	}
+
+	// parse ip values into slice
+	out := make([]net.IP, 0, len(ipStrSlice))
+	for _, ipStr := range ipStrSlice {
+		ip := net.ParseIP(strings.TrimSpace(ipStr))
+		if ip == nil {
+			return fmt.Errorf("invalid string being converted to IP address: %s", ipStr)
+		}
+		out = append(out, ip)
+	}
+
+	if !s.changed {
+		*s.value = out
+	} else {
+		*s.value = append(*s.value, out...)
+	}
+
+	s.changed = true
+
+	return nil
+}
+
+// Type returns a string that uniquely represents this flag's type.
+func (s *ipSliceValue) Type() string {
+	return "ipSlice"
+}
+
+// String defines a "native" format for this net.IP slice flag value.
+func (s *ipSliceValue) String() string {
+
+	ipStrSlice := make([]string, len(*s.value))
+	for i, ip := range *s.value {
+		ipStrSlice[i] = ip.String()
+	}
+
+	out, _ := writeAsCSV(ipStrSlice)
+
+	return "[" + out + "]"
+}
+
+func ipSliceConv(val string) (interface{}, error) {
+	val = strings.Trim(val, "[]")
+	// Emtpy string would cause a slice with one (empty) entry
+	if len(val) == 0 {
+		return []net.IP{}, nil
+	}
+	ss := strings.Split(val, ",")
+	out := make([]net.IP, len(ss))
+	for i, sval := range ss {
+		ip := net.ParseIP(strings.TrimSpace(sval))
+		if ip == nil {
+			return nil, fmt.Errorf("invalid string being converted to IP address: %s", sval)
+		}
+		out[i] = ip
+	}
+	return out, nil
+}
+
+// GetIPSlice returns the []net.IP value of a flag with the given name
+func (f *FlagSet) GetIPSlice(name string) ([]net.IP, error) {
+	val, err := f.getFlagType(name, "ipSlice", ipSliceConv)
+	if err != nil {
+		return []net.IP{}, err
+	}
+	return val.([]net.IP), nil
+}
+
+// IPSliceVar defines a ipSlice flag with specified name, default value, and usage string.
+// The argument p points to a []net.IP variable in which to store the value of the flag.
+func (f *FlagSet) IPSliceVar(p *[]net.IP, name string, value []net.IP, usage string) {
+	f.VarP(newIPSliceValue(value, p), name, "", usage)
+}
+
+// IPSliceVarP is like IPSliceVar, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) IPSliceVarP(p *[]net.IP, name, shorthand string, value []net.IP, usage string) {
+	f.VarP(newIPSliceValue(value, p), name, shorthand, usage)
+}
+
+// IPSliceVar defines a []net.IP flag with specified name, default value, and usage string.
+// The argument p points to a []net.IP variable in which to store the value of the flag.
+func IPSliceVar(p *[]net.IP, name string, value []net.IP, usage string) {
+	CommandLine.VarP(newIPSliceValue(value, p), name, "", usage)
+}
+
+// IPSliceVarP is like IPSliceVar, but accepts a shorthand letter that can be used after a single dash.
+func IPSliceVarP(p *[]net.IP, name, shorthand string, value []net.IP, usage string) {
+	CommandLine.VarP(newIPSliceValue(value, p), name, shorthand, usage)
+}
+
+// IPSlice defines a []net.IP flag with specified name, default value, and usage string.
+// The return value is the address of a []net.IP variable that stores the value of that flag.
+func (f *FlagSet) IPSlice(name string, value []net.IP, usage string) *[]net.IP {
+	p := []net.IP{}
+	f.IPSliceVarP(&p, name, "", value, usage)
+	return &p
+}
+
+// IPSliceP is like IPSlice, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) IPSliceP(name, shorthand string, value []net.IP, usage string) *[]net.IP {
+	p := []net.IP{}
+	f.IPSliceVarP(&p, name, shorthand, value, usage)
+	return &p
+}
+
+// IPSlice defines a []net.IP flag with specified name, default value, and usage string.
+// The return value is the address of a []net.IP variable that stores the value of the flag.
+func IPSlice(name string, value []net.IP, usage string) *[]net.IP {
+	return CommandLine.IPSliceP(name, "", value, usage)
+}
+
+// IPSliceP is like IPSlice, but accepts a shorthand letter that can be used after a single dash.
+func IPSliceP(name, shorthand string, value []net.IP, usage string) *[]net.IP {
+	return CommandLine.IPSliceP(name, shorthand, value, usage)
+}
diff --git a/vendor/src/github.com/spf13/pflag/ip_slice_test.go b/vendor/src/github.com/spf13/pflag/ip_slice_test.go
new file mode 100644
index 000000000..b0c681c5b
--- /dev/null
+++ b/vendor/src/github.com/spf13/pflag/ip_slice_test.go
@@ -0,0 +1,222 @@
+package pflag
+
+import (
+	"fmt"
+	"net"
+	"strings"
+	"testing"
+)
+
+func setUpIPSFlagSet(ipsp *[]net.IP) *FlagSet {
+	f := NewFlagSet("test", ContinueOnError)
+	f.IPSliceVar(ipsp, "ips", []net.IP{}, "Command separated list!")
+	return f
+}
+
+func setUpIPSFlagSetWithDefault(ipsp *[]net.IP) *FlagSet {
+	f := NewFlagSet("test", ContinueOnError)
+	f.IPSliceVar(ipsp, "ips",
+		[]net.IP{
+			net.ParseIP("192.168.1.1"),
+			net.ParseIP("0:0:0:0:0:0:0:1"),
+		},
+		"Command separated list!")
+	return f
+}
+
+func TestEmptyIP(t *testing.T) {
+	var ips []net.IP
+	f := setUpIPSFlagSet(&ips)
+	err := f.Parse([]string{})
+	if err != nil {
+		t.Fatal("expected no error; got", err)
+	}
+
+	getIPS, err := f.GetIPSlice("ips")
+	if err != nil {
+		t.Fatal("got an error from GetIPSlice():", err)
+	}
+	if len(getIPS) != 0 {
+		t.Fatalf("got ips %v with len=%d but expected length=0", getIPS, len(getIPS))
+	}
+}
+
+func TestIPS(t *testing.T) {
+	var ips []net.IP
+	f := setUpIPSFlagSet(&ips)
+
+	vals := []string{"192.168.1.1", "10.0.0.1", "0:0:0:0:0:0:0:2"}
+	arg := fmt.Sprintf("--ips=%s", strings.Join(vals, ","))
+	err := f.Parse([]string{arg})
+	if err != nil {
+		t.Fatal("expected no error; got", err)
+	}
+	for i, v := range ips {
+		if ip := net.ParseIP(vals[i]); ip == nil {
+			t.Fatalf("invalid string being converted to IP address: %s", vals[i])
+		} else if !ip.Equal(v) {
+			t.Fatalf("expected ips[%d] to be %s but got: %s from GetIPSlice", i, vals[i], v)
+		}
+	}
+}
+
+func TestIPSDefault(t *testing.T) {
+	var ips []net.IP
+	f := setUpIPSFlagSetWithDefault(&ips)
+
+	vals := []string{"192.168.1.1", "0:0:0:0:0:0:0:1"}
+	err := f.Parse([]string{})
+	if err != nil {
+		t.Fatal("expected no error; got", err)
+	}
+	for i, v := range ips {
+		if ip := net.ParseIP(vals[i]); ip == nil {
+			t.Fatalf("invalid string being converted to IP address: %s", vals[i])
+		} else if !ip.Equal(v) {
+			t.Fatalf("expected ips[%d] to be %s but got: %s", i, vals[i], v)
+		}
+	}
+
+	getIPS, err := f.GetIPSlice("ips")
+	if err != nil {
+		t.Fatal("got an error from GetIPSlice")
+	}
+	for i, v := range getIPS {
+		if ip := net.ParseIP(vals[i]); ip == nil {
+			t.Fatalf("invalid string being converted to IP address: %s", vals[i])
+		} else if !ip.Equal(v) {
+			t.Fatalf("expected ips[%d] to be %s but got: %s", i, vals[i], v)
+		}
+	}
+}
+
+func TestIPSWithDefault(t *testing.T) {
+	var ips []net.IP
+	f := setUpIPSFlagSetWithDefault(&ips)
+
+	vals := []string{"192.168.1.1", "0:0:0:0:0:0:0:1"}
+	arg := fmt.Sprintf("--ips=%s", strings.Join(vals, ","))
+	err := f.Parse([]string{arg})
+	if err != nil {
+		t.Fatal("expected no error; got", err)
+	}
+	for i, v := range ips {
+		if ip := net.ParseIP(vals[i]); ip == nil {
+			t.Fatalf("invalid string being converted to IP address: %s", vals[i])
+		} else if !ip.Equal(v) {
+			t.Fatalf("expected ips[%d] to be %s but got: %s", i, vals[i], v)
+		}
+	}
+
+	getIPS, err := f.GetIPSlice("ips")
+	if err != nil {
+		t.Fatal("got an error from GetIPSlice")
+	}
+	for i, v := range getIPS {
+		if ip := net.ParseIP(vals[i]); ip == nil {
+			t.Fatalf("invalid string being converted to IP address: %s", vals[i])
+		} else if !ip.Equal(v) {
+			t.Fatalf("expected ips[%d] to be %s but got: %s", i, vals[i], v)
+		}
+	}
+}
+
+func TestIPSCalledTwice(t *testing.T) {
+	var ips []net.IP
+	f := setUpIPSFlagSet(&ips)
+
+	in := []string{"192.168.1.2,0:0:0:0:0:0:0:1", "10.0.0.1"}
+	expected := []net.IP{net.ParseIP("192.168.1.2"), net.ParseIP("0:0:0:0:0:0:0:1"), net.ParseIP("10.0.0.1")}
+	argfmt := "ips=%s"
+	arg1 := fmt.Sprintf(argfmt, in[0])
+	arg2 := fmt.Sprintf(argfmt, in[1])
+	err := f.Parse([]string{arg1, arg2})
+	if err != nil {
+		t.Fatal("expected no error; got", err)
+	}
+	for i, v := range ips {
+		if !expected[i].Equal(v) {
+			t.Fatalf("expected ips[%d] to be %s but got: %s", i, expected[i], v)
+		}
+	}
+}
+
+func TestIPSBadQuoting(t *testing.T) {
+
+	tests := []struct {
+		Want    []net.IP
+		FlagArg []string
+	}{
+		{
+			Want: []net.IP{
+				net.ParseIP("a4ab:61d:f03e:5d7d:fad7:d4c2:a1a5:568"),
+				net.ParseIP("203.107.49.208"),
+				net.ParseIP("14.57.204.90"),
+			},
+			FlagArg: []string{
+				"a4ab:61d:f03e:5d7d:fad7:d4c2:a1a5:568",
+				"203.107.49.208",
+				"14.57.204.90",
+			},
+		},
+		{
+			Want: []net.IP{
+				net.ParseIP("204.228.73.195"),
+				net.ParseIP("86.141.15.94"),
+			},
+			FlagArg: []string{
+				"204.228.73.195",
+				"86.141.15.94",
+			},
+		},
+		{
+			Want: []net.IP{
+				net.ParseIP("c70c:db36:3001:890f:c6ea:3f9b:7a39:cc3f"),
+				net.ParseIP("4d17:1d6e:e699:bd7a:88c5:5e7e:ac6a:4472"),
+			},
+			FlagArg: []string{
+				"c70c:db36:3001:890f:c6ea:3f9b:7a39:cc3f",
+				"4d17:1d6e:e699:bd7a:88c5:5e7e:ac6a:4472",
+			},
+		},
+		{
+			Want: []net.IP{
+				net.ParseIP("5170:f971:cfac:7be3:512a:af37:952c:bc33"),
+				net.ParseIP("93.21.145.140"),
+				net.ParseIP("2cac:61d3:c5ff:6caf:73e0:1b1a:c336:c1ca"),
+			},
+			FlagArg: []string{
+				" 5170:f971:cfac:7be3:512a:af37:952c:bc33  , 93.21.145.140     ",
+				"2cac:61d3:c5ff:6caf:73e0:1b1a:c336:c1ca",
+			},
+		},
+		{
+			Want: []net.IP{
+				net.ParseIP("2e5e:66b2:6441:848:5b74:76ea:574c:3a7b"),
+				net.ParseIP("2e5e:66b2:6441:848:5b74:76ea:574c:3a7b"),
+				net.ParseIP("2e5e:66b2:6441:848:5b74:76ea:574c:3a7b"),
+				net.ParseIP("2e5e:66b2:6441:848:5b74:76ea:574c:3a7b"),
+			},
+			FlagArg: []string{
+				`"2e5e:66b2:6441:848:5b74:76ea:574c:3a7b,        2e5e:66b2:6441:848:5b74:76ea:574c:3a7b,2e5e:66b2:6441:848:5b74:76ea:574c:3a7b     "`,
+				" 2e5e:66b2:6441:848:5b74:76ea:574c:3a7b"},
+		},
+	}
+
+	for i, test := range tests {
+
+		var ips []net.IP
+		f := setUpIPSFlagSet(&ips)
+
+		if err := f.Parse([]string{fmt.Sprintf("--ips=%s", strings.Join(test.FlagArg, ","))}); err != nil {
+			t.Fatalf("flag parsing failed with error: %s\nparsing:\t%#v\nwant:\t\t%s",
+				err, test.FlagArg, test.Want[i])
+		}
+
+		for j, b := range ips {
+			if !b.Equal(test.Want[j]) {
+				t.Fatalf("bad value parsed for test %d on net.IP %d:\nwant:\t%s\ngot:\t%s", i, j, test.Want[j], b)
+			}
+		}
+	}
+}
diff --git a/vendor/src/github.com/spf13/pflag/ipnet.go b/vendor/src/github.com/spf13/pflag/ipnet.go
index 149b764b1..e2c1b8bcd 100644
--- a/vendor/src/github.com/spf13/pflag/ipnet.go
+++ b/vendor/src/github.com/spf13/pflag/ipnet.go
@@ -27,8 +27,6 @@ func (*ipNetValue) Type() string {
 	return "ipNet"
 }
 
-var _ = strings.TrimSpace
-
 func newIPNetValue(val net.IPNet, p *net.IPNet) *ipNetValue {
 	*p = val
 	return (*ipNetValue)(p)
diff --git a/vendor/src/github.com/spf13/pflag/string_array.go b/vendor/src/github.com/spf13/pflag/string_array.go
index f320f2ece..276b7ed49 100644
--- a/vendor/src/github.com/spf13/pflag/string_array.go
+++ b/vendor/src/github.com/spf13/pflag/string_array.go
@@ -1,12 +1,5 @@
 package pflag
 
-import (
-	"fmt"
-	"strings"
-)
-
-var _ = fmt.Fprint
-
 // -- stringArray Value
 type stringArrayValue struct {
 	value   *[]string
@@ -40,7 +33,7 @@ func (s *stringArrayValue) String() string {
 }
 
 func stringArrayConv(sval string) (interface{}, error) {
-	sval = strings.Trim(sval, "[]")
+	sval = sval[1 : len(sval)-1]
 	// An empty string would cause a array with one (empty) string
 	if len(sval) == 0 {
 		return []string{}, nil
diff --git a/vendor/src/github.com/spf13/pflag/string_array_test.go b/vendor/src/github.com/spf13/pflag/string_array_test.go
index 3e3eb74f3..1ceac8c6c 100644
--- a/vendor/src/github.com/spf13/pflag/string_array_test.go
+++ b/vendor/src/github.com/spf13/pflag/string_array_test.go
@@ -192,3 +192,42 @@ func TestSAWithSpecialChar(t *testing.T) {
 		}
 	}
 }
+
+func TestSAWithSquareBrackets(t *testing.T) {
+	var sa []string
+	f := setUpSAFlagSet(&sa)
+
+	in := []string{"][]-[", "[a-z]", "[a-z]+"}
+	expected := []string{"][]-[", "[a-z]", "[a-z]+"}
+	argfmt := "--sa=%s"
+	arg1 := fmt.Sprintf(argfmt, in[0])
+	arg2 := fmt.Sprintf(argfmt, in[1])
+	arg3 := fmt.Sprintf(argfmt, in[2])
+	err := f.Parse([]string{arg1, arg2, arg3})
+	if err != nil {
+		t.Fatal("expected no error; got", err)
+	}
+
+	if len(expected) != len(sa) {
+		t.Fatalf("expected number of sa to be %d but got: %d", len(expected), len(sa))
+	}
+	for i, v := range sa {
+		if expected[i] != v {
+			t.Fatalf("expected sa[%d] to be %s but got: %s", i, expected[i], v)
+		}
+	}
+
+	values, err := f.GetStringArray("sa")
+	if err != nil {
+		t.Fatal("expected no error; got", err)
+	}
+
+	if len(expected) != len(values) {
+		t.Fatalf("expected number of values to be %d but got: %d", len(expected), len(values))
+	}
+	for i, v := range values {
+		if expected[i] != v {
+			t.Fatalf("expected got sa[%d] to be %s but got: %s", i, expected[i], v)
+		}
+	}
+}
diff --git a/vendor/src/github.com/spf13/pflag/string_slice.go b/vendor/src/github.com/spf13/pflag/string_slice.go
index 51e3c5d22..05eee7543 100644
--- a/vendor/src/github.com/spf13/pflag/string_slice.go
+++ b/vendor/src/github.com/spf13/pflag/string_slice.go
@@ -3,12 +3,9 @@ package pflag
 import (
 	"bytes"
 	"encoding/csv"
-	"fmt"
 	"strings"
 )
 
-var _ = fmt.Fprint
-
 // -- stringSlice Value
 type stringSliceValue struct {
 	value   *[]string
@@ -39,7 +36,7 @@ func writeAsCSV(vals []string) (string, error) {
 		return "", err
 	}
 	w.Flush()
-	return strings.TrimSuffix(b.String(), fmt.Sprintln()), nil
+	return strings.TrimSuffix(b.String(), "\n"), nil
 }
 
 func (s *stringSliceValue) Set(val string) error {
@@ -66,7 +63,7 @@ func (s *stringSliceValue) String() string {
 }
 
 func stringSliceConv(sval string) (interface{}, error) {
-	sval = strings.Trim(sval, "[]")
+	sval = sval[1 : len(sval)-1]
 	// An empty string would cause a slice with one (empty) string
 	if len(sval) == 0 {
 		return []string{}, nil
diff --git a/vendor/src/github.com/spf13/pflag/string_slice_test.go b/vendor/src/github.com/spf13/pflag/string_slice_test.go
index 26118c701..c41f3bd66 100644
--- a/vendor/src/github.com/spf13/pflag/string_slice_test.go
+++ b/vendor/src/github.com/spf13/pflag/string_slice_test.go
@@ -213,3 +213,41 @@ func TestSSWithComma(t *testing.T) {
 		}
 	}
 }
+
+func TestSSWithSquareBrackets(t *testing.T) {
+	var ss []string
+	f := setUpSSFlagSet(&ss)
+
+	in := []string{`"[a-z]"`, `"[a-z]+"`}
+	expected := []string{"[a-z]", "[a-z]+"}
+	argfmt := "--ss=%s"
+	arg1 := fmt.Sprintf(argfmt, in[0])
+	arg2 := fmt.Sprintf(argfmt, in[1])
+	err := f.Parse([]string{arg1, arg2})
+	if err != nil {
+		t.Fatal("expected no error; got", err)
+	}
+
+	if len(expected) != len(ss) {
+		t.Fatalf("expected number of ss to be %d but got: %d", len(expected), len(ss))
+	}
+	for i, v := range ss {
+		if expected[i] != v {
+			t.Fatalf("expected ss[%d] to be %s but got: %s", i, expected[i], v)
+		}
+	}
+
+	values, err := f.GetStringSlice("ss")
+	if err != nil {
+		t.Fatal("expected no error; got", err)
+	}
+
+	if len(expected) != len(values) {
+		t.Fatalf("expected number of values to be %d but got: %d", len(expected), len(values))
+	}
+	for i, v := range values {
+		if expected[i] != v {
+			t.Fatalf("expected got ss[%d] to be %s but got: %s", i, expected[i], v)
+		}
+	}
+}
diff --git a/vendor/src/github.com/spf13/pflag/uint_slice.go b/vendor/src/github.com/spf13/pflag/uint_slice.go
new file mode 100644
index 000000000..edd94c600
--- /dev/null
+++ b/vendor/src/github.com/spf13/pflag/uint_slice.go
@@ -0,0 +1,126 @@
+package pflag
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+// -- uintSlice Value
+type uintSliceValue struct {
+	value   *[]uint
+	changed bool
+}
+
+func newUintSliceValue(val []uint, p *[]uint) *uintSliceValue {
+	uisv := new(uintSliceValue)
+	uisv.value = p
+	*uisv.value = val
+	return uisv
+}
+
+func (s *uintSliceValue) Set(val string) error {
+	ss := strings.Split(val, ",")
+	out := make([]uint, len(ss))
+	for i, d := range ss {
+		u, err := strconv.ParseUint(d, 10, 0)
+		if err != nil {
+			return err
+		}
+		out[i] = uint(u)
+	}
+	if !s.changed {
+		*s.value = out
+	} else {
+		*s.value = append(*s.value, out...)
+	}
+	s.changed = true
+	return nil
+}
+
+func (s *uintSliceValue) Type() string {
+	return "uintSlice"
+}
+
+func (s *uintSliceValue) String() string {
+	out := make([]string, len(*s.value))
+	for i, d := range *s.value {
+		out[i] = fmt.Sprintf("%d", d)
+	}
+	return "[" + strings.Join(out, ",") + "]"
+}
+
+func uintSliceConv(val string) (interface{}, error) {
+	val = strings.Trim(val, "[]")
+	// Empty string would cause a slice with one (empty) entry
+	if len(val) == 0 {
+		return []uint{}, nil
+	}
+	ss := strings.Split(val, ",")
+	out := make([]uint, len(ss))
+	for i, d := range ss {
+		u, err := strconv.ParseUint(d, 10, 0)
+		if err != nil {
+			return nil, err
+		}
+		out[i] = uint(u)
+	}
+	return out, nil
+}
+
+// GetUintSlice returns the []uint value of a flag with the given name.
+func (f *FlagSet) GetUintSlice(name string) ([]uint, error) {
+	val, err := f.getFlagType(name, "uintSlice", uintSliceConv)
+	if err != nil {
+		return []uint{}, err
+	}
+	return val.([]uint), nil
+}
+
+// UintSliceVar defines a uintSlice flag with specified name, default value, and usage string.
+// The argument p points to a []uint variable in which to store the value of the flag.
+func (f *FlagSet) UintSliceVar(p *[]uint, name string, value []uint, usage string) {
+	f.VarP(newUintSliceValue(value, p), name, "", usage)
+}
+
+// UintSliceVarP is like UintSliceVar, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) UintSliceVarP(p *[]uint, name, shorthand string, value []uint, usage string) {
+	f.VarP(newUintSliceValue(value, p), name, shorthand, usage)
+}
+
+// UintSliceVar defines a uint[] flag with specified name, default value, and usage string.
+// The argument p points to a uint[] variable in which to store the value of the flag.
+func UintSliceVar(p *[]uint, name string, value []uint, usage string) {
+	CommandLine.VarP(newUintSliceValue(value, p), name, "", usage)
+}
+
+// UintSliceVarP is like the UintSliceVar, but accepts a shorthand letter that can be used after a single dash.
+func UintSliceVarP(p *[]uint, name, shorthand string, value []uint, usage string) {
+	CommandLine.VarP(newUintSliceValue(value, p), name, shorthand, usage)
+}
+
+// UintSlice defines a []uint flag with specified name, default value, and usage string.
+// The return value is the address of a []uint variable that stores the value of the flag.
+func (f *FlagSet) UintSlice(name string, value []uint, usage string) *[]uint {
+	p := []uint{}
+	f.UintSliceVarP(&p, name, "", value, usage)
+	return &p
+}
+
+// UintSliceP is like UintSlice, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) UintSliceP(name, shorthand string, value []uint, usage string) *[]uint {
+	p := []uint{}
+	f.UintSliceVarP(&p, name, shorthand, value, usage)
+	return &p
+}
+
+// UintSlice defines a []uint flag with specified name, default value, and usage string.
+// The return value is the address of a []uint variable that stores the value of the flag.
+func UintSlice(name string, value []uint, usage string) *[]uint {
+	return CommandLine.UintSliceP(name, "", value, usage)
+}
+
+// UintSliceP is like UintSlice, but accepts a shorthand letter that can be used after a single dash.
+func UintSliceP(name, shorthand string, value []uint, usage string) *[]uint {
+	return CommandLine.UintSliceP(name, shorthand, value, usage)
+}
diff --git a/vendor/src/github.com/spf13/pflag/uint_slice_test.go b/vendor/src/github.com/spf13/pflag/uint_slice_test.go
new file mode 100644
index 000000000..db1a19dc2
--- /dev/null
+++ b/vendor/src/github.com/spf13/pflag/uint_slice_test.go
@@ -0,0 +1,161 @@
+package pflag
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+	"testing"
+)
+
+func setUpUISFlagSet(uisp *[]uint) *FlagSet {
+	f := NewFlagSet("test", ContinueOnError)
+	f.UintSliceVar(uisp, "uis", []uint{}, "Command separated list!")
+	return f
+}
+
+func setUpUISFlagSetWithDefault(uisp *[]uint) *FlagSet {
+	f := NewFlagSet("test", ContinueOnError)
+	f.UintSliceVar(uisp, "uis", []uint{0, 1}, "Command separated list!")
+	return f
+}
+
+func TestEmptyUIS(t *testing.T) {
+	var uis []uint
+	f := setUpUISFlagSet(&uis)
+	err := f.Parse([]string{})
+	if err != nil {
+		t.Fatal("expected no error; got", err)
+	}
+
+	getUIS, err := f.GetUintSlice("uis")
+	if err != nil {
+		t.Fatal("got an error from GetUintSlice():", err)
+	}
+	if len(getUIS) != 0 {
+		t.Fatalf("got is %v with len=%d but expected length=0", getUIS, len(getUIS))
+	}
+}
+
+func TestUIS(t *testing.T) {
+	var uis []uint
+	f := setUpUISFlagSet(&uis)
+
+	vals := []string{"1", "2", "4", "3"}
+	arg := fmt.Sprintf("--uis=%s", strings.Join(vals, ","))
+	err := f.Parse([]string{arg})
+	if err != nil {
+		t.Fatal("expected no error; got", err)
+	}
+	for i, v := range uis {
+		u, err := strconv.ParseUint(vals[i], 10, 0)
+		if err != nil {
+			t.Fatalf("got error: %v", err)
+		}
+		if uint(u) != v {
+			t.Fatalf("expected uis[%d] to be %s but got %d", i, vals[i], v)
+		}
+	}
+	getUIS, err := f.GetUintSlice("uis")
+	if err != nil {
+		t.Fatalf("got error: %v", err)
+	}
+	for i, v := range getUIS {
+		u, err := strconv.ParseUint(vals[i], 10, 0)
+		if err != nil {
+			t.Fatalf("got error: %v", err)
+		}
+		if uint(u) != v {
+			t.Fatalf("expected uis[%d] to be %s but got: %d from GetUintSlice", i, vals[i], v)
+		}
+	}
+}
+
+func TestUISDefault(t *testing.T) {
+	var uis []uint
+	f := setUpUISFlagSetWithDefault(&uis)
+
+	vals := []string{"0", "1"}
+
+	err := f.Parse([]string{})
+	if err != nil {
+		t.Fatal("expected no error; got", err)
+	}
+	for i, v := range uis {
+		u, err := strconv.ParseUint(vals[i], 10, 0)
+		if err != nil {
+			t.Fatalf("got error: %v", err)
+		}
+		if uint(u) != v {
+			t.Fatalf("expect uis[%d] to be %d but got: %d", i, u, v)
+		}
+	}
+
+	getUIS, err := f.GetUintSlice("uis")
+	if err != nil {
+		t.Fatal("got an error from GetUintSlice():", err)
+	}
+	for i, v := range getUIS {
+		u, err := strconv.ParseUint(vals[i], 10, 0)
+		if err != nil {
+			t.Fatal("got an error from GetIntSlice():", err)
+		}
+		if uint(u) != v {
+			t.Fatalf("expected uis[%d] to be %d from GetUintSlice but got: %d", i, u, v)
+		}
+	}
+}
+
+func TestUISWithDefault(t *testing.T) {
+	var uis []uint
+	f := setUpUISFlagSetWithDefault(&uis)
+
+	vals := []string{"1", "2"}
+	arg := fmt.Sprintf("--uis=%s", strings.Join(vals, ","))
+	err := f.Parse([]string{arg})
+	if err != nil {
+		t.Fatal("expected no error; got", err)
+	}
+	for i, v := range uis {
+		u, err := strconv.ParseUint(vals[i], 10, 0)
+		if err != nil {
+			t.Fatalf("got error: %v", err)
+		}
+		if uint(u) != v {
+			t.Fatalf("expected uis[%d] to be %d from GetUintSlice but got: %d", i, u, v)
+		}
+	}
+
+	getUIS, err := f.GetUintSlice("uis")
+	if err != nil {
+		t.Fatal("got an error from GetUintSlice():", err)
+	}
+	for i, v := range getUIS {
+		u, err := strconv.ParseUint(vals[i], 10, 0)
+		if err != nil {
+			t.Fatalf("got error: %v", err)
+		}
+		if uint(u) != v {
+			t.Fatalf("expected uis[%d] to be %d from GetUintSlice but got: %d", i, u, v)
+		}
+	}
+}
+
+func TestUISCalledTwice(t *testing.T) {
+	var uis []uint
+	f := setUpUISFlagSet(&uis)
+
+	in := []string{"1,2", "3"}
+	expected := []int{1, 2, 3}
+	argfmt := "--uis=%s"
+	arg1 := fmt.Sprintf(argfmt, in[0])
+	arg2 := fmt.Sprintf(argfmt, in[1])
+	err := f.Parse([]string{arg1, arg2})
+	if err != nil {
+		t.Fatal("expected no error; got", err)
+	}
+	for i, v := range uis {
+		if uint(expected[i]) != v {
+			t.Fatalf("expected uis[%d] to be %d but got: %d", i, expected[i], v)
+		}
+	}
+}