fix flag include problem

cmd/controller-manager/app/controller-manager.go

@@ -29,6 +29,7 @@ import (
 	extv1b1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1beta1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	utilfeature "k8s.io/apiserver/pkg/util/feature"
+	utilflag "k8s.io/apiserver/pkg/util/flag"
 	"k8s.io/apiserver/pkg/util/logs"
 
 	"github.com/kubernetes-sigs/federation-v2/cmd/controller-manager/app/options"
@@ -58,7 +59,6 @@ member clusters and does the necessary reconciliation`,
 			if verFlag {
 				os.Exit(0)
 			}
-			PrintFlags(cmd.Flags())
 
 			if err := Run(opts); err != nil {
 				fmt.Fprintf(os.Stderr, "%v\n", err)
@@ -67,8 +67,11 @@ member clusters and does the necessary reconciliation`,
 		},
 	}
 
-	opts.AddFlags(cmd.Flags())
-	cmd.Flags().BoolVar(&verFlag, "version", false, "Prints the Version info of controller-manager")
+	opts.AddFlags(pflag.CommandLine)
+	pflag.CommandLine.BoolVar(&verFlag, "version", false, "Prints the Version info of controller-manager")
+
+	// parse the command line flags into the respective objects
+	utilflag.InitFlags()
 
 	return cmd
 }
@@ -142,10 +145,3 @@ type InstallStrategy struct {
 func (s *InstallStrategy) GetCRDs() []*extv1b1.CustomResourceDefinition {
 	return s.crds
 }
-
-// PrintFlags logs the flags in the flagset
-func PrintFlags(flags *pflag.FlagSet) {
-	flags.VisitAll(func(flag *pflag.Flag) {
-		glog.V(1).Infof("FLAG: --%s=%q", flag.Name, flag.Value)
-	})
-}