The placement service is already setup to use UWsgi, we need
to move the other Nova services to follow suit as part of our community
goal for Pike.
Additionally, we need to clean up the nginx configuration as we are
moving away from fronting uWSGI with nginx inside the roles.
Depends-On: Ib66b9709fb88205eaf3f133c87357a4dbbdde5ae
Change-Id: If6c30e00c1c753692c970457b75e3ae7f5cc066c
Implements: blueprint goal-deploy-api-in-wsgi
823a80bd44