Bumping k8s version to 1.13.0-beta.1

vendor/k8s.io/apiextensions-apiserver/main.go

@@ -20,7 +20,7 @@ import (
 	"flag"
 	"os"
 
-	"github.com/golang/glog"
+	"k8s.io/klog"
 
 	"k8s.io/apiextensions-apiserver/pkg/cmd/server"
 	genericapiserver "k8s.io/apiserver/pkg/server"
@@ -35,6 +35,6 @@ func main() {
 	cmd := server.NewServerCommand(os.Stdout, os.Stderr, stopCh)
 	cmd.Flags().AddGoFlagSet(flag.CommandLine)
 	if err := cmd.Execute(); err != nil {
-		glog.Fatal(err)
+		klog.Fatal(err)
 	}
 }