Reuse /var/lib/tempest symlink for rpm also
Reuse /var/lib/tempest symlink for rpm also

https://review.openstack.org/#/c/605980/ with this review in
tripleo, we use /var/lib/tempest path but in kolla tempest
dockerfile /usr/share/openstack-tempest is used which is not
mounted in tripleo deployment.
Let's reuse the same volume with tempest container instead
of /usr/share/openstack-tempest.

Change-Id: I402f58ce53fdce426582cf2fc31349da6d2f5ae0
Signed-off-by: Chandan Kumar <37614c4f126be5146599b9d19fe2ba37ae0ea495@redhat.com>

openstack/kolla,stackforge/kolla,rahulunair/kolla,stackforge/kolla,rahulunair/kolla,stackforge/kolla,openstack/kolla