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/controller/replicaset/replica_set_utils.go

@@ -22,7 +22,7 @@ import (
 	"fmt"
 	"reflect"
 
-	"github.com/golang/glog"
+	"k8s.io/klog"
 
 	apps "k8s.io/api/apps/v1"
 	"k8s.io/api/core/v1"
@@ -55,7 +55,7 @@ func updateReplicaSetStatus(c appsclient.ReplicaSetInterface, rs *apps.ReplicaSe
 	var getErr, updateErr error
 	var updatedRS *apps.ReplicaSet
 	for i, rs := 0, rs; ; i++ {
-		glog.V(4).Infof(fmt.Sprintf("Updating status for %v: %s/%s, ", rs.Kind, rs.Namespace, rs.Name) +
+		klog.V(4).Infof(fmt.Sprintf("Updating status for %v: %s/%s, ", rs.Kind, rs.Namespace, rs.Name) +
 			fmt.Sprintf("replicas %d->%d (need %d), ", rs.Status.Replicas, newStatus.Replicas, *(rs.Spec.Replicas)) +
 			fmt.Sprintf("fullyLabeledReplicas %d->%d, ", rs.Status.FullyLabeledReplicas, newStatus.FullyLabeledReplicas) +
 			fmt.Sprintf("readyReplicas %d->%d, ", rs.Status.ReadyReplicas, newStatus.ReadyReplicas) +