fix logging calls (#3315)

Author: mikeweiwei

pkg/minikube/notify/notify.go

@@ -118,7 +118,7 @@ func getLatestVersionFromURL(url string) (semver.Version, error) {
 
 func GetAllVersionsFromURL(url string) (Releases, error) {
 	var releases Releases
-	glog.Infof("Checking for updates...")
+	glog.Info("Checking for updates...")
 	if err := getJson(url, &releases); err != nil {
 		return releases, errors.Wrap(err, "Error getting json from minikube version url")
 	}

pkg/minikube/tunnel/tunnel_manager.go

@@ -75,7 +75,7 @@ func (mgr *Manager) startTunnel(ctx context.Context, tunnel controller) (done ch
 
 func (mgr *Manager) timerLoop(ready, check chan bool) {
 	for {
-		glog.V(4).Infof("waiting for tunnel to be ready for next check")
+		glog.V(4).Info("waiting for tunnel to be ready for next check")
 		<-ready
 		glog.V(4).Infof("sleep for %s", mgr.delay)
 		time.Sleep(mgr.delay)

pkg/util/kubernetes.go

@@ -211,7 +211,7 @@ func WaitForService(c kubernetes.Interface, namespace, name string, exist bool,
 			glog.Infof("Service %s in namespace %s disappeared.", name, namespace)
 			return !exist, nil
 		case !IsRetryableAPIError(err):
-			glog.Infof("Non-retryable failure while getting service.")
+			glog.Info("Non-retryable failure while getting service.")
 			return false, err
 		default:
 			glog.Infof("Get service %s in namespace %s failed: %v", name, namespace, err)