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/volume/volume_linux.go

@@ -24,7 +24,7 @@ import (
 
 	"os"
 
-	"github.com/golang/glog"
+	"k8s.io/klog"
 )
 
 const (
@@ -63,13 +63,13 @@ func SetVolumeOwnership(mounter Mounter, fsGroup *int64) error {
 		}
 
 		if stat == nil {
-			glog.Errorf("Got nil stat_t for path %v while setting ownership of volume", path)
+			klog.Errorf("Got nil stat_t for path %v while setting ownership of volume", path)
 			return nil
 		}
 
 		err = os.Chown(path, int(stat.Uid), int(*fsGroup))
 		if err != nil {
-			glog.Errorf("Chown failed on %v: %v", path, err)
+			klog.Errorf("Chown failed on %v: %v", path, err)
 		}
 
 		mask := rwMask
@@ -83,7 +83,7 @@ func SetVolumeOwnership(mounter Mounter, fsGroup *int64) error {
 
 		err = os.Chmod(path, info.Mode()|mask)
 		if err != nil {
-			glog.Errorf("Chmod failed on %v: %v", path, err)
+			klog.Errorf("Chmod failed on %v: %v", path, err)
 		}
 
 		return nil