nacos server本地化采用jar方式启动，简化开发

jeecg-boot/jeecg-cloud-module/jeecg-cloud-nacos/src/main/java/com/alibaba/nacos/JeecgNacosApplication.java

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+package com.alibaba.nacos;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.web.servlet.ServletComponentScan;
+import org.springframework.scheduling.annotation.EnableScheduling;
+
+/**
+ * Nacos 启动类
+ * 引用的nacos console 源码运行，简化开发
+ * 生产建议从官网下载最新版配置运行
+ * @author zyf
+ */
+@SpringBootApplication(scanBasePackages = "com.alibaba.nacos")
+@ServletComponentScan
+@EnableScheduling
+public class JeecgNacosApplication {
+
+    /**
+     * 是否单机模式启动
+     */
+    private static String standalone = "true";
+
+    /**
+     * 是否开启鉴权
+     */
+    private static String enabled = "false";
+
+    public static void main(String[] args) {
+        System.setProperty("nacos.standalone", standalone);
+        System.setProperty("nacos.core.auth.enabled", enabled);
+        SpringApplication.run(JeecgNacosApplication.class, args);
+    }
+}