Add graceful shutdown and lifecycle timeout configuration

ad-engine-server/src/main/resources/application.yml

@@ -31,6 +31,8 @@ spring:
             flow-rules-key: sentinel.flowRules
             default-flow-rule-value: [ ]
             rule-type: flow
+  lifecycle:
+    timeout-per-shutdown-phase: 30s
 
   profiles:
     active: dev
@@ -56,6 +58,7 @@ server:
     context-path: /ad-engine
     session:
       timeout: 60
+  shutdown: graceful
 pagehelper:
   helper-dialect: mysql