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

cluster/images/etcd-version-monitor/BUILD

@@ -17,12 +17,12 @@ go_library(
     importpath = "k8s.io/kubernetes/cluster/images/etcd-version-monitor",
     deps = [
         "//vendor/github.com/gogo/protobuf/proto:go_default_library",
-        "//vendor/github.com/golang/glog:go_default_library",
         "//vendor/github.com/prometheus/client_golang/prometheus:go_default_library",
         "//vendor/github.com/prometheus/client_golang/prometheus/promhttp:go_default_library",
         "//vendor/github.com/prometheus/client_model/go:go_default_library",
         "//vendor/github.com/prometheus/common/expfmt:go_default_library",
         "//vendor/github.com/spf13/pflag:go_default_library",
+        "//vendor/k8s.io/klog:go_default_library",
     ],
 )
 

cluster/images/etcd-version-monitor/etcd-version-monitor.go

@@ -25,12 +25,12 @@ import (
 	"time"
 
 	"github.com/gogo/protobuf/proto"
-	"github.com/golang/glog"
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/prometheus/client_golang/prometheus/promhttp"
 	dto "github.com/prometheus/client_model/go"
 	"github.com/prometheus/common/expfmt"
 	"github.com/spf13/pflag"
+	"k8s.io/klog"
 )
 
 // Initialize the prometheus instrumentation and client related flags.
@@ -245,7 +245,7 @@ func getVersionPeriodically(stopCh <-chan struct{}) {
 	lastSeenBinaryVersion := ""
 	for {
 		if err := getVersion(&lastSeenBinaryVersion); err != nil {
-			glog.Errorf("Failed to fetch etcd version: %v", err)
+			klog.Errorf("Failed to fetch etcd version: %v", err)
 		}
 		select {
 		case <-stopCh:
@@ -399,7 +399,7 @@ func main() {
 	go getVersionPeriodically(stopCh)
 
 	// Serve our metrics on listenAddress/metricsPath.
-	glog.Infof("Listening on: %v", listenAddress)
+	klog.Infof("Listening on: %v", listenAddress)
 	http.Handle(metricsPath, promhttp.HandlerFor(gatherer, promhttp.HandlerOpts{}))
-	glog.Errorf("Stopped listening/serving metrics: %v", http.ListenAndServe(listenAddress, nil))
+	klog.Errorf("Stopped listening/serving metrics: %v", http.ListenAndServe(listenAddress, nil))
 }