Updated openstack/openstack
Project: openstack-dev/devstack  db5a80171f289c58a9c7c4a771f3d373f3fc767a
null
Unbuffer log output

* Force-flush log output so we don't lose log output in certain error cases.
* Slow down exit paths: add sleep to die(), wait until last moment to
  kill child processes (including the awk log output filter)

Change-Id: I1620fd33b89b237d9c2bb6206f3de2c81719f676