Fix error message for pause a restarting container

Signed-off-by: Zhang Wei <zhangwei555@huawei.com>

daemon/pause.go

@@ -35,6 +35,11 @@ func (daemon *Daemon) containerPause(container *container.Container) error {
 		return derr.ErrorCodeAlreadyPaused.WithArgs(container.ID)
 	}
 
+	// We cannot Pause the container which is restarting
+	if container.Restarting {
+		return derr.ErrorCodeContainerRestarting.WithArgs(container.ID)
+	}
+
 	if err := daemon.execDriver.Pause(container.Command); err != nil {
 		return err
 	}