WIP - adding request timeout

app/notifications/notifications_sms_callback.py

@@ -11,6 +11,8 @@ register_errors(sms_callback_blueprint)
 
 @sms_callback_blueprint.route('/mmg', methods=['POST'])
 def process_mmg_response():
+    from time import sleep
+    sleep(20)
     client_name = 'MMG'
     data = json.loads(request.data)
     errors = validate_callback_data(data=data,