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/glusterfs/glusterfs_util.go

@@ -21,7 +21,7 @@ import (
 	"fmt"
 	"os"
 
-	"github.com/golang/glog"
+	"k8s.io/klog"
 )
 
 // readGlusterLog will take the last 2 lines of the log file
@@ -34,7 +34,7 @@ func readGlusterLog(path string, podName string) error {
 	var line2 string
 	linecount := 0
 
-	glog.Infof("failure, now attempting to read the gluster log for pod %s", podName)
+	klog.Infof("failure, now attempting to read the gluster log for pod %s", podName)
 
 	// Check and make sure path exists
 	if len(path) == 0 {