As part of the Pike goals we are moving api services to run as WSGI
apps. neutron-server service is set up as a wsgi app, and this patch
moves it over.
Since this is just a drop in replacement for the existing eventlet
service, operators an deployers should notice no difference.
Change-Id: Ia7ebd13be9ce7834679d439b7bda242805768ef8
Depends-On: https://review.opendev.org/c/openstack/openstack-ansible/+/820586
Implements: blueprint goal-deploy-api-in-wsgi
bdd06c8448