[kube-proxy]enhance kubeproxy init flag

cmd/kube-proxy/BUILD

@@ -22,7 +22,6 @@ go_library(
         "//cmd/kube-proxy/app:go_default_library",
         "//pkg/client/metrics/prometheus:go_default_library",
         "//pkg/version/prometheus:go_default_library",
-        "//vendor/github.com/spf13/pflag:go_default_library",
         "//vendor/k8s.io/apiserver/pkg/util/flag:go_default_library",
         "//vendor/k8s.io/apiserver/pkg/util/logs:go_default_library",
     ],

cmd/kube-proxy/proxy.go

@@ -17,14 +17,11 @@ limitations under the License.
 package main
 
 import (
-	goflag "flag"
 	"fmt"
 	"math/rand"
 	"os"
 	"time"
 
-	"github.com/spf13/pflag"
-
 	utilflag "k8s.io/apiserver/pkg/util/flag"
 	"k8s.io/apiserver/pkg/util/logs"
 	"k8s.io/kubernetes/cmd/kube-proxy/app"
@@ -37,12 +34,7 @@ func main() {
 
 	command := app.NewProxyCommand()
 
-	// TODO: once we switch everything over to Cobra commands, we can go back to calling
-	// utilflag.InitFlags() (by removing its pflag.Parse() call). For now, we have to set the
-	// normalize func and add the go flag set by hand.
-	pflag.CommandLine.SetNormalizeFunc(utilflag.WordSepNormalizeFunc)
-	pflag.CommandLine.AddGoFlagSet(goflag.CommandLine)
-	// utilflag.InitFlags()
+	utilflag.InitFlags()
 	logs.InitLogs()
 	defer logs.FlushLogs()