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/auth/authorizer/abac/BUILD

@@ -17,7 +17,7 @@ go_library(
         "//staging/src/k8s.io/apimachinery/pkg/runtime:go_default_library",
         "//staging/src/k8s.io/apiserver/pkg/authentication/user:go_default_library",
         "//staging/src/k8s.io/apiserver/pkg/authorization/authorizer:go_default_library",
-        "//vendor/github.com/golang/glog:go_default_library",
+        "//vendor/k8s.io/klog:go_default_library",
     ],
 )
 

pkg/auth/authorizer/abac/abac.go

@@ -25,7 +25,7 @@ import (
 	"os"
 	"strings"
 
-	"github.com/golang/glog"
+	"k8s.io/klog"
 
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apiserver/pkg/authentication/user"
@@ -105,7 +105,7 @@ func NewFromFile(path string) (policyList, error) {
 	}
 
 	if unversionedLines > 0 {
-		glog.Warningf("Policy file %s contained unversioned rules. See docs/admin/authorization.md#abac-mode for ABAC file format details.", path)
+		klog.Warningf("Policy file %s contained unversioned rules. See docs/admin/authorization.md#abac-mode for ABAC file format details.", path)
 	}
 
 	if err := scanner.Err(); err != nil {