Fixed TPLDOCKER-381 defect regarding invalid ssid connection

 Fixed TPLDOCKER-381 defect regarding invalid ssid connection

If setup-adaptor tries to connection with invalid ssid,
it will not be completed properly.

1) wifi ssid : docker, password : dockerdocker111 => Okay (invaild password case)
2) wifi ssid : docker11, password : dockerdocker => Fail (invalid ssid case)

setup-adaptor uses __wifi_scan_finished_cb function to connect.
wifi_manager_foreach_found_ap will be worked according to __wifi_connect_ap_cb() return
If all of ssids are searched and compared, it will go down and has to meet
__wifi_exit_loop() function to be completed properly.