更新代理节点配置，支持 Docker 模式下的路径管理，添加相关测试用例

atsf_agent/agent.json

@@ -5,10 +5,10 @@
   "node_ip": "10.0.0.8",
   "agent_version": "0.1.0",
   "nginx_version": "1.25.5",
-  "route_config_path": "./etc/nginx/conf.d/atsflare_routes.conf",
-  "state_path": "./var/lib/atsflare/agent-state.json",
-  "nginx_binary": "nginx",
+  "data_dir": "./data",
+  "nginx_container_name": "atsflare-nginx",
+  "nginx_docker_image": "nginx:stable-alpine",
   "heartbeat_interval": 30000000000,
   "sync_interval": 30000000000,
   "request_timeout": 10000000000
-}
+}