add more EasyCloud && MVD API

Done:
1. add EasyCloud && MVD API:
     OTA/reset
2. add MVD config interfaces in MICO ConfigServer for testing MVD API,
   this is the tempory approach, maybe changed later;
3. add device auto activate after 60s in userApp thread, just for test,
   this could be done in cloud itself;
4. use new product_id just for EasyCloud test.

TODO:
1. [func] OTA retransmission && bin checksum;
2. [func] MVD login_id/dev_passwd check;
3. [bug] MICOConfigServer memory leak;
4. [bug] if device activated by ConfigServer,MQTT client can not connect to server,
         but can connect after device restart,
         and if activated by userApp thread, no such problem.
4. [refactor] http request interface.