openstack-ansible-os_nova/tests at 5b624d6cea4763c589bf577c21c8572074eb4091 - openstack-ansible-os_nova - OpenDev: Free Software Needs Free Tools

This patch adds Nova requirements for Ocata:
* Nova Placement API running as uwsgi with Nginx.
* cell_v2 setup for cell0 and cell1
* All required settings for these services with sane defaults
It fixes up some ordering for DB operations:
* online_db_migrations should only happen after a full upgrade.
* Cell setup needs to happen after api_db sync but before db sync.
* Discover_hosts for cell_v2 needs to happen after compute is restarted
This adds functionality to allow uwsgi apps in the init scripts:
* Allowing the "--log" line to be adjusted.
* Setting the condition value so that only enabled services are deployed
* Fixes a bug for program_override which mean this value was never being
used.
Depends-On: I082f37bb3ce61a900e06a58f21c7882f83671355
Change-Id: I282d25988377d18257b708859f89a7ae4260ac07