Move pipeline definition from zuul-jobs to project-config
Move pipeline definition from zuul-jobs to project-config

We had defined jobs to run against zuul-jobs inside zuul-jobs but
we'd rather define them here instead. Let's do that.

(Depends on Ic04c48d7a0e15459632b91bce81e777d12622222 but not put in
below because that job is zuulv3 only, and zuulv2 doesn't realise it's
merged).

Change-Id: I52dbb1aca27ac05f682b0a02c0ed0cd27640194f

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