Align packstack templates with ceilometer upstream git repo

This patch is needed to have packstack aligned with changes in the
upstream module will provide:

*) a new class called ceilometer::agent::auth;
*) add the firewall rule to open ceilometer api port;
*) changes needed in the nova_ceilometer module to support
  agent::auth;
*) Added alarm module

The patch got restored because of huge waiting on 54797

Change-Id: I7c7762b6faeae8e8677d0fc8d972e1dcb0180f7e
Merge "Align packstack templates with ceilometer upstream git repo"