New logging added to forgotten module piface_function

piface_function.py

 import random
 import time
 
-logger = logging.getLogger('APP')
+try:
+    from config import APP_NAME as ROOT_LOGGER_NAME
+except ImportError:
+    ROOT_LOGGER_NAME = 'root'
+logger = logging.getLogger(ROOT_LOGGER_NAME).getChild(__name__)
 
 geo_position = geo.gps.coordinate(lat=49.976596, lon=9.1481443)