Non-newstyle modules can't use pipelining

This is because we pass arguments to non-newstyle modules via an
external file.  If we pipeline, then the interpreter thinks it has to
run the arguments as the script instead of what is piped in via stdin.

lib/ansible/plugins/action/__init__.py

@@ -430,7 +430,7 @@ def _execute_module(self, module_name=None, module_args=None, tmp=None, task_var
         cmd = ""
         in_data = None
 
-        if self._connection.has_pipelining and self._play_context.pipelining and not C.DEFAULT_KEEP_REMOTE_FILES:
+        if self._connection.has_pipelining and self._play_context.pipelining and not C.DEFAULT_KEEP_REMOTE_FILES and module_style == 'new':
             in_data = module_data
         else:
             if remote_module_path: