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/kubelet/util/util_unix.go

@@ -25,8 +25,8 @@ import (
 	"os"
 	"time"
 
-	"github.com/golang/glog"
 	"golang.org/x/sys/unix"
+	"k8s.io/klog"
 )
 
 const (
@@ -73,7 +73,7 @@ func parseEndpointWithFallbackProtocol(endpoint string, fallbackProtocol string)
 		fallbackEndpoint := fallbackProtocol + "://" + endpoint
 		protocol, addr, err = parseEndpoint(fallbackEndpoint)
 		if err == nil {
-			glog.Warningf("Using %q as endpoint is deprecated, please consider using full url format %q.", endpoint, fallbackEndpoint)
+			klog.Warningf("Using %q as endpoint is deprecated, please consider using full url format %q.", endpoint, fallbackEndpoint)
 		}
 	}
 	return