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

test/utils/tmpdir.go

@@ -19,7 +19,7 @@ package utils
 import (
 	"io/ioutil"
 
-	"github.com/golang/glog"
+	"k8s.io/klog"
 )
 
 func MakeTempDirOrDie(prefix string, baseDir string) string {
@@ -28,7 +28,7 @@ func MakeTempDirOrDie(prefix string, baseDir string) string {
 	}
 	tempDir, err := ioutil.TempDir(baseDir, prefix)
 	if err != nil {
-		glog.Fatalf("Can't make a temp rootdir: %v", err)
+		klog.Fatalf("Can't make a temp rootdir: %v", err)
 	}
 	return tempDir
 }