Fix TaskFailed call

"name" is really set to "id" (more useful).

Signed-off-by: Yves Bastide <yves@botify.com>

Author: ybastide

simpleflow/swf/executor.py

@@ -360,7 +360,7 @@ def _get_future_from_child_workflow_event(self, event):
             future.set_finished(format.decode(event['result']))
         elif state == 'failed':
             future.set_exception(exceptions.TaskFailed(
-                name=event['name'],
+                name=event['id'],
                 reason=event['reason'],
                 details=event.get('details'),
             ))