Update python-tempestconf to 2.4.0 in Stein
Update python-tempestconf to 2.4.0 in Stein

The review updates the tag for python-tempestconf to
2.4.0 version in Stein.

Change-Id: I99587a987326b4b54101af59f11d174137009ce2

redhat-openstack/rdoinfo