Commit [1] introduced the delete targets with empty rules and commit [2] changed them in Mitaka incompletely to admin_or_owner rules.
[1] https://github.com/openstack/nova/commit/9c917816048482e3a42aa06e2aa4933a1a6f7f8c [2] https://github.com/openstack/nova/commit/09a55e2bf4f3d5df3b76454f4839e2ce96f9d42f
Commit [1] introduced the delete targets with empty rules and commit [2] changed them in Mitaka incompletely to admin_or_owner rules.
[1] https:/ /github. com/openstack/ nova/commit/ 9c917816048482e 3a42aa06e2aa493 3a1a6f7f8c /github. com/openstack/ nova/commit/ 09a55e2bf4f3d5d f3b76454f4839e2 ce96f9d42f
[2] https:/