decom /etc/cluster file on app servers

It's only used by apache-graceful-all to determine whether to log the action or
not, which makes no sense at all.

Change-Id: Ib45125f15ebc2276b4c1ab707a349268ea772965
rcstream: add a 5s post-stop sleep delay

To prevent "address already in use" errors.
<http://upstart.ubuntu.com/cookbook/#delay-respawn-of-a-job>

Change-Id: I69218aca0c5ce7dbff289e1a7b211efd00ac985c
Merge "decom /etc/cluster file on app servers" into production