[workaround] Set region for packtack jobs explicitely
[workaround] Set region for packtack jobs explicitely

Since with python-tempestconf 2.2.0 there is new requirement
to have OS_REGION_NAME set after deployment in EVN but
packatack's keystonerc do not deliver (and since
packtack is almost deprecated, it might never deliver).

https://bugzilla.redhat.com/show_bug.cgi?id=1716434

Change-Id: I82bd8623571298170e076a422e0cd28f220e1290

redhat-openstack/infrared,redhat-openstack/infrared,redhat-openstack/infrared