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

plugin/pkg/auth/authorizer/rbac/bootstrappolicy/controller_policy.go

@@ -19,7 +19,7 @@ package bootstrappolicy
 import (
 	"strings"
 
-	"github.com/golang/glog"
+	"k8s.io/klog"
 
 	rbacv1 "k8s.io/api/rbac/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
@@ -32,12 +32,12 @@ const saRolePrefix = "system:controller:"
 
 func addControllerRole(controllerRoles *[]rbacv1.ClusterRole, controllerRoleBindings *[]rbacv1.ClusterRoleBinding, role rbacv1.ClusterRole) {
 	if !strings.HasPrefix(role.Name, saRolePrefix) {
-		glog.Fatalf(`role %q must start with %q`, role.Name, saRolePrefix)
+		klog.Fatalf(`role %q must start with %q`, role.Name, saRolePrefix)
 	}
 
 	for _, existingRole := range *controllerRoles {
 		if role.Name == existingRole.Name {
-			glog.Fatalf("role %q was already registered", role.Name)
+			klog.Fatalf("role %q was already registered", role.Name)
 		}
 	}