This is a simplified (removed support for debian-like distros)
re-implementation of what was sent for review upstream in
https://review.openstack.org/#/c/270004/
We are moving this to be self contained within packstack as we
are not able to agree on an approach to be shared commonly with
other projects for the time being and this is required to move
forward with packstack gate job integration.
run_tests.sh will, by default, recover logs to be stored in
$WORKSPACE/logs (when in a jenkins job) or in /tmp/logs.
Change-Id: Ieab783e4b41324809c9f76285596f550994be2bf