Control Plane API endpoints deployment via WSGI [1] was a community goal
in Pike release. This method provides a series of advantages over that
of running api via a Python command that runs a web server.
This patch add scripts for running API services via WSGI.
The follow-up patch will add the devstack install support.
[1]https://governance.openstack.org/tc/goals/pike/deploy-api-in-wsgi.html
Change-Id: Ifb0ae2fa2143236fb9b38d230f2604e4e560e66e