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/token/BUILD

@@ -25,7 +25,7 @@ go_library(
         "//staging/src/k8s.io/apimachinery/pkg/util/clock:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/util/wait:go_default_library",
         "//staging/src/k8s.io/client-go/kubernetes:go_default_library",
-        "//vendor/github.com/golang/glog:go_default_library",
+        "//vendor/k8s.io/klog:go_default_library",
     ],
 )
 

pkg/kubelet/token/token_manager.go

@@ -24,12 +24,12 @@ import (
 	"sync"
 	"time"
 
-	"github.com/golang/glog"
 	authenticationv1 "k8s.io/api/authentication/v1"
 	"k8s.io/apimachinery/pkg/types"
 	"k8s.io/apimachinery/pkg/util/clock"
 	"k8s.io/apimachinery/pkg/util/wait"
 	clientset "k8s.io/client-go/kubernetes"
+	"k8s.io/klog"
 )
 
 const (
@@ -90,7 +90,7 @@ func (m *Manager) GetServiceAccountToken(namespace, name string, tr *authenticat
 		case m.expired(ctr):
 			return nil, fmt.Errorf("token %s expired and refresh failed: %v", key, err)
 		default:
-			glog.Errorf("couldn't update token %s: %v", key, err)
+			klog.Errorf("couldn't update token %s: %v", key, err)
 			return ctr, nil
 		}
 	}
@@ -142,7 +142,7 @@ func (m *Manager) expired(t *authenticationv1.TokenRequest) bool {
 // ttl, or if the token is older than 24 hours.
 func (m *Manager) requiresRefresh(tr *authenticationv1.TokenRequest) bool {
 	if tr.Spec.ExpirationSeconds == nil {
-		glog.Errorf("expiration seconds was nil for tr: %#v", tr)
+		klog.Errorf("expiration seconds was nil for tr: %#v", tr)
 		return false
 	}
 	now := m.clock.Now()