Disable wifi after testing in comm_wifi_connect.py
Disable wifi after testing in comm_wifi_connect.py

In order to aovid connection issue for host

Signed-off-by: Wu Dawei <b8fdb5b9f0b6b29b63287bce074c688ca08d8ead@intel.com>

daweiwu/meta-iotqa-1,daweiwu/meta-iotqa-1,wanghongjuan/meta-iotqa-1,ostroproject/meta-iotqa,wanghongjuan/meta-iotqa-1,daweiwu/meta-iotqa-1,daweiwu/meta-iotqa-1,ostroproject/meta-iotqa,ostroproject/meta-iotqa,wanghongjuan/meta-iotqa-1,wanghongjuan/meta-iotqa-1,ostroproject/meta-iotqa,ostroproject/meta-iotqa,daweiwu/meta-iotqa-1,wanghongjuan/meta-iotqa-1