Fixing mentions of "Jenkins" in layout.yaml
Fixing mentions of "Jenkins" in layout.yaml

Jenkins is still a user, but it's not actually what runs the tests, so
let's make the distinction clear.

Change-Id: I6183aeba2ae68799f6b2a7e749fb87dd2220f32b

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