qa_crowbarsetup.sh: Run tempest last
qa_crowbarsetup.sh: Run tempest last

we want to ensure that the keystone toggling did not break
services, so we run tempest after doing the operation to
ensure that the cloud is still working. Also this reduces
scrolling to find a tempest failure in CI logs

SUSE-Cloud/automation,gosipyan/automation,gosipyan/automation,aspiers/automation,SUSE-Cloud/automation,aspiers/automation,gosipyan/automation,aspiers/automation,SUSE-Cloud/automation,SUSE-Cloud/automation,aspiers/automation,gosipyan/automation