bug fix

estateagents.pdman.json

               "name": "serial_no",
               "type": "Integer",
               "remark": "",
-              "chnname": "序号"
+              "chnname": "序号",
+              "pk": true,
+              "notNull": true,
+              "autoIncrement": true
             },
             {
               "name": "miniapp_id",