Move from glog to klog

- Move from the old github.com/golang/glog to k8s.io/klog
- klog as explicit InitFlags() so we add them as necessary
- we update the other repositories that we vendor that made a similar
change from glog to klog
  * github.com/kubernetes/repo-infra
  * k8s.io/gengo/
  * k8s.io/kube-openapi/
  * github.com/google/cadvisor
- Entirely remove all references to glog
- Fix some tests by explicit InitFlags in their init() methods

Change-Id: I92db545ff36fcec83afe98f550c9e630098b3135

pkg/proxy/util/utils.go

@@ -27,7 +27,7 @@ import (
 	helper "k8s.io/kubernetes/pkg/apis/core/v1/helper"
 	utilnet "k8s.io/kubernetes/pkg/util/net"
 
-	"github.com/golang/glog"
+	"k8s.io/klog"
 )
 
 const (
@@ -62,12 +62,12 @@ func IsLocalIP(ip string) (bool, error) {
 func ShouldSkipService(svcName types.NamespacedName, service *v1.Service) bool {
 	// if ClusterIP is "None" or empty, skip proxying
 	if !helper.IsServiceIPSet(service) {
-		glog.V(3).Infof("Skipping service %s due to clusterIP = %q", svcName, service.Spec.ClusterIP)
+		klog.V(3).Infof("Skipping service %s due to clusterIP = %q", svcName, service.Spec.ClusterIP)
 		return true
 	}
 	// Even if ClusterIP is set, ServiceTypeExternalName services don't get proxied
 	if service.Spec.Type == v1.ServiceTypeExternalName {
-		glog.V(3).Infof("Skipping service %s due to Type=ExternalName", svcName)
+		klog.V(3).Infof("Skipping service %s due to Type=ExternalName", svcName)
 		return true
 	}
 	return false
@@ -134,7 +134,7 @@ func GetNodeAddresses(cidrs []string, nw NetworkInterfacer) (sets.String, error)
 // LogAndEmitIncorrectIPVersionEvent logs and emits incorrect IP version event.
 func LogAndEmitIncorrectIPVersionEvent(recorder record.EventRecorder, fieldName, fieldValue, svcNamespace, svcName string, svcUID types.UID) {
 	errMsg := fmt.Sprintf("%s in %s has incorrect IP version", fieldValue, fieldName)
-	glog.Errorf("%s (service %s/%s).", errMsg, svcNamespace, svcName)
+	klog.Errorf("%s (service %s/%s).", errMsg, svcNamespace, svcName)
 	if recorder != nil {
 		recorder.Eventf(
 			&v1.ObjectReference{