Move ovb containers job to experimental queue
Move ovb containers job to experimental queue

We do not, and have not for quite some time, had the capacity to add a
4th ovb to check-tripleo. Move the containers job to the experimental
queue for now until either some of the existing jobs are consolidated or
we gain more capacity.

Change-Id: I23c49f6a7492e9ba215566cd0154a6bfc30be2df

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