Add job 'tempest-full' that is removed upstream

The job 'tempest-full' that our CI uses as a base has been removed
upstream. [1]

Add it here temporarily until we migrate to 'tempest-full-py3'.

[1]: https://review.opendev.org/c/openstack/tempest/+/909973

Change-Id: Ibfdb6e4b854beda841d4a40bd6d4e9329f55cfe3
1 file changed