domain list scoping fix (mhen)
the main fix was merged a while ago: https://review.opendev.org/c/openstack/keystone/+/900028
Q: is https://review.opendev.org/c/openstack/keystone-tempest-plugin/+/900545 still applicable?
it would have been a necessary adjustment to the tempest tests after the above merge but tests have been restructured in the meantime (mentioned at PTG)