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_node/remote/ssh.go

@@ -24,7 +24,7 @@ import (
 	"strings"
 	"sync"
 
-	"github.com/golang/glog"
+	"k8s.io/klog"
 )
 
 var sshOptions = flag.String("ssh-options", "", "Commandline options passed to ssh.")
@@ -38,7 +38,7 @@ var sshDefaultKeyMap map[string]string
 func init() {
 	usr, err := user.Current()
 	if err != nil {
-		glog.Fatal(err)
+		klog.Fatal(err)
 	}
 	sshOptionsMap = map[string]string{
 		"gce": "-o UserKnownHostsFile=/dev/null -o IdentitiesOnly=yes -o CheckHostIP=no -o StrictHostKeyChecking=no -o ServerAliveInterval=30 -o LogLevel=ERROR",