Add OS_REGION_NAME to admin-openrc.sh.j2
Add OS_REGION_NAME to admin-openrc.sh.j2

Change-Id: I6c769e5231e9d0e327ef6b9928666369d694f5fe
Closes-Bug: #1685692

dardelean/kolla-ansible,dardelean/kolla-ansible,dardelean/kolla-ansible