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/ipvs/kernelcheck_linux.go

@@ -26,7 +26,7 @@ import (
 	"k8s.io/apimachinery/pkg/util/sets"
 	utilsexec "k8s.io/utils/exec"
 
-	"github.com/golang/glog"
+	"k8s.io/klog"
 )
 
 // RequiredIPVSKernelModulesAvailableCheck tests IPVS required kernel modules.
@@ -42,7 +42,7 @@ func (r RequiredIPVSKernelModulesAvailableCheck) Name() string {
 // Check try to validates IPVS required kernel modules exists or not.
 // The name of function can not be changed.
 func (r RequiredIPVSKernelModulesAvailableCheck) Check() (warnings, errors []error) {
-	glog.V(1).Infoln("validating the kernel module IPVS required exists in machine or not")
+	klog.V(1).Infoln("validating the kernel module IPVS required exists in machine or not")
 
 	kernelVersion, ipvsModules, err := GetKernelVersionAndIPVSMods(r.Executor)
 	if err != nil {