now assemble skips during checkmode

TODO: actually make it check with checkmode
fixes http://github.com/ansible/ansible-modules-core/issues/661

lib/ansible/plugins/action/assemble.py

@@ -77,6 +77,9 @@ class ActionModule(ActionBase):
 
     def run(self, tmp=None, task_vars=dict()):
 
+        if self._connection_info.check_mode:
+            return dict(skipped=True, msg=("skipped, this module does not support check_mode."))
+
         src        = self._task.args.get('src', None)
         dest       = self._task.args.get('dest', None)
         delimiter  = self._task.args.get('delimiter', None)