Ironic already had mod_wsgi setup, but this patch moves it to use uWSGI.
Additionally, this moves to use a filtered_services_list for Ironic
The ironic role should be standardized to meet the service setup of
other roles, using a filtered service list, and a dict of services with
settings moves us closer to this.
Change-Id: Ib432380dbc2ea11f9ac005713121a7b42ab97109
227a672eeb