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/e2e/framework/util.go

@@ -41,9 +41,9 @@ import (
 	"text/tabwriter"
 	"time"
 
-	"github.com/golang/glog"
 	"golang.org/x/crypto/ssh"
 	"golang.org/x/net/websocket"
+	"k8s.io/klog"
 
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
@@ -4865,7 +4865,7 @@ func ListNamespaceEvents(c clientset.Interface, ns string) error {
 		return err
 	}
 	for _, event := range ls.Items {
-		glog.Infof("Event(%#v): type: '%v' reason: '%v' %v", event.InvolvedObject, event.Type, event.Reason, event.Message)
+		klog.Infof("Event(%#v): type: '%v' reason: '%v' %v", event.InvolvedObject, event.Type, event.Reason, event.Message)
 	}
 	return nil
 }
@@ -4904,7 +4904,7 @@ func (p *E2ETestNodePreparer) PrepareNodes() error {
 		sum += v.Count
 		for ; index < sum; index++ {
 			if err := testutils.DoPrepareNode(p.client, &nodes.Items[index], v.Strategy); err != nil {
-				glog.Errorf("Aborting node preparation: %v", err)
+				klog.Errorf("Aborting node preparation: %v", err)
 				return err
 			}
 			p.nodeToAppliedStrategy[nodes.Items[index].Name] = v.Strategy
@@ -4922,7 +4922,7 @@ func (p *E2ETestNodePreparer) CleanupNodes() error {
 		strategy, found := p.nodeToAppliedStrategy[name]
 		if found {
 			if err = testutils.DoCleanupNode(p.client, name, strategy); err != nil {
-				glog.Errorf("Skipping cleanup of Node: failed update of %v: %v", name, err)
+				klog.Errorf("Skipping cleanup of Node: failed update of %v: %v", name, err)
 				encounteredError = err
 			}
 		}