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/kubectl/cmd/util/editor/editor.go

@@ -27,7 +27,7 @@ import (
 	"runtime"
 	"strings"
 
-	"github.com/golang/glog"
+	"k8s.io/klog"
 
 	"k8s.io/kubernetes/pkg/kubectl/util/term"
 )
@@ -124,7 +124,7 @@ func (e Editor) Launch(path string) error {
 	cmd.Stdout = os.Stdout
 	cmd.Stderr = os.Stderr
 	cmd.Stdin = os.Stdin
-	glog.V(5).Infof("Opening file with editor %v", args)
+	klog.V(5).Infof("Opening file with editor %v", args)
 	if err := (term.TTY{In: os.Stdin, TryDev: true}).Safe(cmd.Run); err != nil {
 		if err, ok := err.(*exec.Error); ok {
 			if err.Err == exec.ErrNotFound {