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/util/flag/BUILD

@@ -12,8 +12,8 @@ go_library(
     importpath = "k8s.io/kubernetes/pkg/util/flag",
     deps = [
         "//staging/src/k8s.io/apimachinery/pkg/util/net:go_default_library",
-        "//vendor/github.com/golang/glog:go_default_library",
         "//vendor/github.com/spf13/pflag:go_default_library",
+        "//vendor/k8s.io/klog:go_default_library",
     ],
 )
 

pkg/util/flag/flags.go

@@ -21,8 +21,8 @@ import (
 	"net"
 	"strconv"
 
-	"github.com/golang/glog"
 	"github.com/spf13/pflag"
+	"k8s.io/klog"
 
 	utilnet "k8s.io/apimachinery/pkg/util/net"
 )
@@ -30,7 +30,7 @@ import (
 // PrintFlags logs the flags in the flagset
 func PrintFlags(flags *pflag.FlagSet) {
 	flags.VisitAll(func(flag *pflag.Flag) {
-		glog.V(1).Infof("FLAG: --%s=%q", flag.Name, flag.Value)
+		klog.V(1).Infof("FLAG: --%s=%q", flag.Name, flag.Value)
 	})
 }