move signal handling for hyperkube apiserver and kubelet commands out of hyperkube main command

cmd/kube-apiserver/app/server.go

@@ -88,7 +88,7 @@ const etcdRetryLimit = 60
 const etcdRetryInterval = 1 * time.Second
 
 // NewAPIServerCommand creates a *cobra.Command object with default parameters
-func NewAPIServerCommand(stopCh <-chan struct{}) *cobra.Command {
+func NewAPIServerCommand() *cobra.Command {
 	s := options.NewServerRunOptions()
 	cmd := &cobra.Command{
 		Use: "kube-apiserver",
@@ -111,7 +111,7 @@ cluster's shared state through which all other components interact.`,
 				return utilerrors.NewAggregate(errs)
 			}
 
-			return Run(completedOptions, stopCh)
+			return Run(completedOptions, genericapiserver.SetupSignalHandler())
 		},
 	}