修改 前端菜单 管理菜单，角色前后端分配 及通道创建失败的问题

xinda-server/iot-server-core/src/main/java/com/xinda/server/Server.java

@@ -73,5 +73,7 @@ public abstract class Server {
         log.warn("=>服务:{},在端口:{},已经停止！", config.name, config.port);
     }
 
-
+    public void shutdownGracefully() {
+        stop();
+    }
 }

xinda-server/iot-server-core/src/main/java/com/xinda/server/config/NettyConfig.java

@@ -52,7 +52,6 @@ public class NettyConfig {
 
 
 
-
     public NettyConfig(int workerGroup,
                        int businessGroup,
                        int readerIdleTime,