优化：nacos启动集群模式改为单机启动模式。

nacos/bin/startup.cmd

@@ -24,7 +24,8 @@ set BASE_DIR="%BASE_DIR:~0,-5%"
 set DEFAULT_SEARCH_LOCATIONS="classpath:/,classpath:/config/,file:./,file:./config/"
 set CUSTOM_SEARCH_LOCATIONS=%DEFAULT_SEARCH_LOCATIONS%,file:%BASE_DIR%/conf/
 
-set MODE="cluster"
+rem set MODE="cluster"
+set MODE="standalone"
 set FUNCTION_MODE="all"
 set SERVER=nacos-server
 set MODE_INDEX=-1