* The recently merged aodh role is trying to copy api_paste.ini on startup
which is already present at build time.

* memcache_servers was using incorrect for loop syntax

Note, the trim_blocks header is to solve the issue highlighted by
Jeffrey[0]

[0] http://lists.openstack.org/pipermail/openstack-dev/2016-September/103532.html

Change-Id: I8baa5446b3b6271d57d54c4c1663a338d8ab3cc8
Closes-Bug: #1624462