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

Kubernetes-commit: 954996e231074dc7429f7be1256a579bedd8344c

tools/remotecommand/v1.go

@@ -22,9 +22,9 @@ import (
 	"io/ioutil"
 	"net/http"
 
-	"github.com/golang/glog"
 	"k8s.io/api/core/v1"
 	"k8s.io/apimachinery/pkg/util/httpstream"
+	"k8s.io/klog"
 )
 
 // streamProtocolV1 implements the first version of the streaming exec & attach
@@ -53,10 +53,10 @@ func (p *streamProtocolV1) stream(conn streamCreator) error {
 	errorChan := make(chan error)
 
 	cp := func(s string, dst io.Writer, src io.Reader) {
-		glog.V(6).Infof("Copying %s", s)
-		defer glog.V(6).Infof("Done copying %s", s)
+		klog.V(6).Infof("Copying %s", s)
+		defer klog.V(6).Infof("Done copying %s", s)
 		if _, err := io.Copy(dst, src); err != nil && err != io.EOF {
-			glog.Errorf("Error copying %s: %v", s, err)
+			klog.Errorf("Error copying %s: %v", s, err)
 		}
 		if s == v1.StreamTypeStdout || s == v1.StreamTypeStderr {
 			doneChan <- struct{}{}