Add mqtt folder in iotd

guowenxue

2021-04-20 b5bf869dfb976503ec146d79b588eeff61f13e50

 modules/python/sht20.py

old mode 100644
new mode 100755
@@ -1,4 +1,6 @@
#!/usr/bin/python
#-*- coding: utf-8 -*-

import fcntl
import time
import unittest