Also updates exercise script which will catch this.
And also fixes an issue due to which the AIM gate job was
running against the master branch of GBP source versus
the branch checked out for this patchset by the infra
job. This is fixed by changing the GBP devstack plugin name
to group-based-policy instead of the earlier name 'gbp'.
This allows the job to use the 'group-based-policy' source
directory cloned by the OpenStack infra job (for the current
patchset) as opposed to cloning into a new 'gbp' directory
from the master. Unfortunately, a lot of special casing
needs to be introduced for configuration of other services
as well. It is not possible to get away from this special
casing to be able to install from the intree devstack plugin
and the GBP master branch is behind the OpenStack master
release.
Closes-bug: 1674024
Change-Id: I5bd3f1c3ecfbedbd24243c2c111472dcff9059a2
847f41c275