Add zuul.yaml for zuulv3
Add zuul.yaml for zuulv3

This is our first version of zuul.yaml. Currently we are only adding
pipelines.

Change-Id: Ib0f8830405b9014d6ac242eaa1f8ccbae767e224
Signed-off-by: Paul Belanger <e7139c8e6c4ea75cc1c287ce081b2dc0f3ab39ec@redhat.com>

openstack-infra/project-config,openstack-infra/project-config