Add Vitrage database configuration
Add Vitrage database configuration

The Vitrage graph service fails to start up when there is no configured
database.  This patch addresses this issue by configuring the database
for it.

Change-Id: I2a5ae82bff051ac2a30a3d5447bb0b4b86dd1920

openstack/puppet-openstack-integration,openstack/puppet-openstack-integration,openstack/puppet-openstack-integration