Update dependencies to K8s 1.8

vendor/k8s.io/apiserver/pkg/util/feature/BUILD

@@ -1,7 +1,5 @@
 package(default_visibility = ["//visibility:public"])
 
-licenses(["notice"])
-
 load(
     "@io_bazel_rules_go//go:def.bzl",
     "go_library",
@@ -12,16 +10,30 @@ go_test(
     name = "go_default_test",
     srcs = ["feature_gate_test.go"],
     library = ":go_default_library",
-    tags = ["automanaged"],
     deps = ["//vendor/github.com/spf13/pflag:go_default_library"],
 )
 
 go_library(
     name = "go_default_library",
     srcs = ["feature_gate.go"],
-    tags = ["automanaged"],
     deps = [
         "//vendor/github.com/golang/glog:go_default_library",
         "//vendor/github.com/spf13/pflag:go_default_library",
     ],
 )
+
+filegroup(
+    name = "package-srcs",
+    srcs = glob(["**"]),
+    tags = ["automanaged"],
+    visibility = ["//visibility:private"],
+)
+
+filegroup(
+    name = "all-srcs",
+    srcs = [
+        ":package-srcs",
+        "//staging/src/k8s.io/apiserver/pkg/util/feature/testing:all-srcs",
+    ],
+    tags = ["automanaged"],
+)

vendor/k8s.io/apiserver/pkg/util/feature/feature_gate.go

@@ -21,6 +21,7 @@ import (
 	"sort"
 	"strconv"
 	"strings"
+	"sync"
 
 	"github.com/golang/glog"
 	"github.com/spf13/pflag"
@@ -70,15 +71,23 @@ const (
 // FeatureGate parses and stores flag gates for known features from
 // a string like feature1=true,feature2=false,...
 type FeatureGate interface {
+	// AddFlag adds a flag for setting global feature gates to the specified FlagSet.
 	AddFlag(fs *pflag.FlagSet)
+	// Set parses and stores flag gates for known features
+	// from a string like feature1=true,feature2=false,...
 	Set(value string) error
+	// Enabled returns true if the key is enabled.
 	Enabled(key Feature) bool
+	// Add adds features to the featureGate.
 	Add(features map[Feature]FeatureSpec) error
+	// KnownFeatures returns a slice of strings describing the FeatureGate's known features.
 	KnownFeatures() []string
 }
 
 // featureGate implements FeatureGate as well as pflag.Value for flag parsing.
 type featureGate struct {
+	lock sync.RWMutex
+
 	known   map[Feature]FeatureSpec
 	special map[Feature]func(*featureGate, bool)
 	enabled map[Feature]bool
@@ -112,9 +121,12 @@ func NewFeatureGate() *featureGate {
 	return f
 }
 
-// Set Parses a string of the form // "key1=value1,key2=value2,..." into a
+// Set Parses a string of the form "key1=value1,key2=value2,..." into a
 // map[string]bool of known keys or returns an error.
 func (f *featureGate) Set(value string) error {
+	f.lock.Lock()
+	defer f.lock.Unlock()
+
 	for _, s := range strings.Split(value, ",") {
 		if len(s) == 0 {
 			continue
@@ -145,7 +157,11 @@ func (f *featureGate) Set(value string) error {
 	return nil
 }
 
+// String returns a string containing all enabled feature gates, formatted as "key1=value1,key2=value2,...".
 func (f *featureGate) String() string {
+	f.lock.RLock()
+	defer f.lock.RUnlock()
+
 	pairs := []string{}
 	for k, v := range f.enabled {
 		pairs = append(pairs, fmt.Sprintf("%s=%t", k, v))
@@ -158,7 +174,11 @@ func (f *featureGate) Type() string {
 	return "mapStringBool"
 }
 
+// Add adds features to the featureGate.
 func (f *featureGate) Add(features map[Feature]FeatureSpec) error {
+	f.lock.Lock()
+	defer f.lock.Unlock()
+
 	if f.closed {
 		return fmt.Errorf("cannot add a feature gate after adding it to the flag set")
 	}
@@ -176,7 +196,11 @@ func (f *featureGate) Add(features map[Feature]FeatureSpec) error {
 	return nil
 }
 
+// Enabled returns true if the key is enabled.
 func (f *featureGate) Enabled(key Feature) bool {
+	f.lock.RLock()
+	defer f.lock.RUnlock()
+
 	defaultValue := f.known[key].Default
 	if f.enabled != nil {
 		if v, ok := f.enabled[key]; ok {
@@ -188,7 +212,9 @@ func (f *featureGate) Enabled(key Feature) bool {
 
 // AddFlag adds a flag for setting global feature gates to the specified FlagSet.
 func (f *featureGate) AddFlag(fs *pflag.FlagSet) {
+	f.lock.Lock()
 	f.closed = true
+	f.lock.Unlock()
 
 	known := f.KnownFeatures()
 	fs.Var(f, flagName, ""+
@@ -196,8 +222,10 @@ func (f *featureGate) AddFlag(fs *pflag.FlagSet) {
 		"Options are:\n"+strings.Join(known, "\n"))
 }
 
-// Returns a string describing the FeatureGate's known features.
+// KnownFeatures returns a slice of strings describing the FeatureGate's known features.
 func (f *featureGate) KnownFeatures() []string {
+	f.lock.RLock()
+	defer f.lock.RUnlock()
 	var known []string
 	for k, v := range f.known {
 		pre := ""