Add native zuulv3 set up
Add native zuulv3 set up

Use the native zuul v3 templates that are defined in openstack-manuals
repository.

Change-Id: If92d9d079fd945ff2e43b9abc7758d05e0ad5dc8
Depends-On: I377632e640a099d0a8640db4959684d9ecd68f8c

openstack/api-site,openstack/api-site,openstack/api-site,openstack/api-site