Add ci-script for the OVB upgrade gate jobs
Add ci-script for the OVB upgrade gate jobs

This ci-script will be run in upgrade jobs running on OVB.
This ci-script leaves out some of the extra-vars that are
included in
https://github.com/openstack/tripleo-quickstart/blob/master/ci-scripts/upgrade.sh
Those vars have been added to the config file for OVB upgrades.

Change-Id: I358d656dab903cef70600fc371b2c3e8ec993604

redhat-openstack/rdo-infra,rdo-infra/ci-config,redhat-openstack/rdo-infra,rdo-infra/ci-config,redhat-openstack/rdo-infra,redhat-openstack/rdo-infra,rdo-infra/ci-config,rdo-infra/ci-config