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

cmd/controller-manager/app/BUILD

@@ -21,8 +21,8 @@ go_library(
         "//staging/src/k8s.io/apiserver/pkg/server/mux:go_default_library",
         "//staging/src/k8s.io/apiserver/pkg/server/routes:go_default_library",
         "//staging/src/k8s.io/client-go/kubernetes:go_default_library",
-        "//vendor/github.com/golang/glog:go_default_library",
         "//vendor/github.com/prometheus/client_golang/prometheus:go_default_library",
+        "//vendor/k8s.io/klog:go_default_library",
     ],
 )
 

cmd/controller-manager/app/helper.go

@@ -21,9 +21,9 @@ import (
 	"net/http"
 	"time"
 
-	"github.com/golang/glog"
 	"k8s.io/apimachinery/pkg/util/wait"
 	clientset "k8s.io/client-go/kubernetes"
+	"k8s.io/klog"
 )
 
 // WaitForAPIServer waits for the API Server's /healthz endpoint to report "ok" with timeout.
@@ -40,7 +40,7 @@ func WaitForAPIServer(client clientset.Interface, timeout time.Duration) error {
 		if healthStatus != http.StatusOK {
 			content, _ := result.Raw()
 			lastErr = fmt.Errorf("APIServer isn't healthy: %v", string(content))
-			glog.Warningf("APIServer isn't healthy yet: %v. Waiting a little while.", string(content))
+			klog.Warningf("APIServer isn't healthy yet: %v. Waiting a little while.", string(content))
 			return false, nil
 		}