Fix spawn import

git-svn-id: https://redmine.imt-atlantique.fr/svn/xaal/code/Python/branches/0.7@2844 b32b6428-25c9-4566-ad07-03861ab6144f

devices/protocols/Netatmo/xaal/netatmo/gw.py

-from xaal.lib import Engine,tools,Device
+from xaal.lib import tools,Device,helpers
+
 from . import netatmo
 import platform
 import logging
@@ -7,7 +8,7 @@ RATE = 300 # update every 5 min
 PACKAGE_NAME = "xaal.netatmo"
 logger = logging.getLogger(PACKAGE_NAME)
 
-from xaal.aiolib.core import spawn
+
 
 
 class GW:
@@ -75,7 +76,7 @@ class GW:
             if m.macId == macId :
                 m.update_sensors(attr)   
 
-    @spawn
+    @helpers.spawn
     def readweatherstation(self):
         netatmo_data = netatmo.API(self.cfg).get_data()
         if netatmo_data == None: