Add metadata to configure proxy for openstack services

This patch adds apache metadata to configure proxy redirect
for services that still run under eventlet. This proxy may
be used as SSL termination proxy when needed.
The following services were added:
 - nova
 - glance
 - cinder
 - designate
 - heat
 - neutron
 - nova-placement

Change-Id: I7120f92125bbc4a656d92c843765ba648ac3b236
7 files changed