confd: start in polling mode

This allows us not to enable the inotify handler immediately, and thus
to make it easier for us should the config file not exist at all.

Signed-off-by: Guido Trotter <ultrotter@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>

daemons/ganeti-confd

@@ -115,7 +115,6 @@ class ConfdInotifyEventHandler(pyinotify.ProcessEvent):
                 pyinotify.EventsCodes.IN_MODIFY
     self.file = file
     self.watch_handle = None
-    self.enable()
 
   def enable(self):
     """Watch the given file
@@ -204,7 +203,7 @@ class ConfdConfigurationReloader(object):
     self.processor = processor
     self.mainloop = mainloop
 
-    self.polling = False
+    self.polling = True
     self.last_notification = 0
 
     # Asyncronous inotify handler for config changes