* caizhibang:20170428 modify the save_rule command in apfree_wifidog_mqtt_protocol
* caizhibang:20170504 add the function to delete multiple ips
* caizhibang:20170504 add the function to delete multiple ips
* caizhibang:20170504 add show iplist function from mqtt
* add function to set auth server customized
* caizhibang:20170505 modify function to set auth server
* modify the result parsing json object