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/controller/nodeipam/node_ipam_controller.go

@@ -20,7 +20,7 @@ import (
 	"net"
 	"time"
 
-	"github.com/golang/glog"
+	"k8s.io/klog"
 
 	utilruntime "k8s.io/apimachinery/pkg/util/runtime"
 
@@ -90,13 +90,13 @@ func NewNodeIpamController(
 	allocatorType ipam.CIDRAllocatorType) (*Controller, error) {
 
 	if kubeClient == nil {
-		glog.Fatalf("kubeClient is nil when starting Controller")
+		klog.Fatalf("kubeClient is nil when starting Controller")
 	}
 
 	eventBroadcaster := record.NewBroadcaster()
-	eventBroadcaster.StartLogging(glog.Infof)
+	eventBroadcaster.StartLogging(klog.Infof)
 
-	glog.Infof("Sending events to api server.")
+	klog.Infof("Sending events to api server.")
 	eventBroadcaster.StartRecordingToSink(
 		&v1core.EventSinkImpl{
 			Interface: kubeClient.CoreV1().Events(""),
@@ -107,13 +107,13 @@ func NewNodeIpamController(
 	}
 
 	if clusterCIDR == nil {
-		glog.Fatal("Controller: Must specify --cluster-cidr if --allocate-node-cidrs is set")
+		klog.Fatal("Controller: Must specify --cluster-cidr if --allocate-node-cidrs is set")
 	}
 	mask := clusterCIDR.Mask
 	if allocatorType != ipam.CloudAllocatorType {
 		// Cloud CIDR allocator does not rely on clusterCIDR or nodeCIDRMaskSize for allocation.
 		if maskSize, _ := mask.Size(); maskSize > nodeCIDRMaskSize {
-			glog.Fatal("Controller: Invalid --cluster-cidr, mask size of cluster CIDR must be less than --node-cidr-mask-size")
+			klog.Fatal("Controller: Invalid --cluster-cidr, mask size of cluster CIDR must be less than --node-cidr-mask-size")
 		}
 	}
 
@@ -141,10 +141,10 @@ func NewNodeIpamController(
 		}
 		ipamc, err := ipam.NewController(cfg, kubeClient, cloud, clusterCIDR, serviceCIDR, nodeCIDRMaskSize)
 		if err != nil {
-			glog.Fatalf("Error creating ipam controller: %v", err)
+			klog.Fatalf("Error creating ipam controller: %v", err)
 		}
 		if err := ipamc.Start(nodeInformer); err != nil {
-			glog.Fatalf("Error trying to Init(): %v", err)
+			klog.Fatalf("Error trying to Init(): %v", err)
 		}
 	} else {
 		var err error
@@ -165,8 +165,8 @@ func NewNodeIpamController(
 func (nc *Controller) Run(stopCh <-chan struct{}) {
 	defer utilruntime.HandleCrash()
 
-	glog.Infof("Starting ipam controller")
-	defer glog.Infof("Shutting down ipam controller")
+	klog.Infof("Starting ipam controller")
+	defer klog.Infof("Shutting down ipam controller")
 
 	if !controller.WaitForCacheSync("node", stopCh, nc.nodeInformerSynced) {
 		return