Prep JJB jobs for running on bare-trusty

We need to make sure that jenkins will run jobs on bare-trusty before we
can migrate and projects to bare-trusty. So do the initial JJB prep now,
then we can do a project at a time.

Change-Id: I6e80567730bff8d387d8a5b87d7368ea3be6d3ab
Merge "Prep JJB jobs for running on bare-trusty"