Deprecate informula wsgi script

All openstack services uses 99% persent same wsgi apache config.
This patch adds functionality to configure barbican apache wsgi config
from the pillar. To do this on cluster level the following file
should be included:
 - system.apache.server.site.barbican

The intree wsgi template will be removed when we switch all model
and cookiecutter to use apache template.

Change-Id: Ic0170c14027446c2bf15578f65744bd5ddc07adc
6 files changed