message: add start finish output
diff: @@ -96,6 +96,7 @@ int ServerManager::start_and_wait() {
  LOG(ERROR) << "Failed to start Paddle Inference Server";
  return -1;
  }
  + LOG(WARNING) << "Finsh start C++ PaddleServing.";
  _server.RunUntilAskedToQuit();
  ServerManager::stop_reloader();
  