Add placeholder for doing the actual streaming

Change-Id: I9e043e33d74eee6015514bdc0e21cd63c5f227a6
diff --git a/zuul/ansible/callback/zuul_stream.py b/zuul/ansible/callback/zuul_stream.py
index 694899e..beae3d6 100644
--- a/zuul/ansible/callback/zuul_stream.py
+++ b/zuul/ansible/callback/zuul_stream.py
@@ -171,6 +171,9 @@
 
         if self._play.strategy != 'free':
             self._print_task_banner(task)
+        if task.action == 'command':
+            # TODO(mordred): Spawn a reading thread to read the remote logfile
+            self._display.display("Reading logs goes here")
 
     def _print_task_banner(self, task):
         # args can be specified as no_log in several places: in the task or in