format args to lowercase

git-svn-id: https://redmine.imt-atlantique.fr/svn/xaal/code/Python/trunk@1367 b32b6428-25c9-4566-ad07-03861ab6144f

xaal-lib/src/xAAL/core.py

@@ -158,10 +158,10 @@ class Engine(object):
         msg = self.__mf.build_alive_for(dev, timeout)
         self.queue_tx(msg)
 
-    def send_isAlive(self, dev, devTypes):
+    def send_isAlive(self, dev, devtypes):
         """Send a isAlive message, w/ devTypes filtering"""
         body = {}
-        body['devTypes'] = devTypes
+        body['devTypes'] = devtypes
         msg = self.__mf.build_msg(dev, [], "request", "isAlive", body)
         self.queue_tx(msg)