修改app业务请求接口返回值

Controller/AppCampaignController.py

@@ -554,3 +554,4 @@ class AppCampaignView(View):
             return response.json(0, {'list': country_list})
         except Exception as e:
             return response.json(500, 'error_line:{}, error_msg:{}'.format(e.__traceback__.tb_lineno, repr(e)))
+