退出登录时，删除单点session

zheng-upms/zheng-upms-server/src/main/java/com/zheng/upms/admin/controller/SSOController.java

@@ -217,6 +217,8 @@ public class SSOController {
 	public String logout(HttpServletRequest request) {
 		// shiro退出登录
 		SecurityUtils.getSubject().logout();
+		// 清除单点sessionId
+		CookieUtil.getCookie(response, ZHENG_UPMS_SERVER_SESSION_ID);
 
 		String sessionId = CookieUtil.getCookie(request, ZHENG_UPMS_SERVER_SESSION_ID);
 		// 当前全局会话sessionId