Comment 0 for bug 1808859

Keystone implemented scope_types for oslo.policy RuleDefault objects in the Queens release [0]. In order to take full advantage of scope_types, keystone is going to have to evolve policy enforcement checks in the group API. This is documented in each patch with FIXMEs [1].

System users should be able to manage groups across all domains in the deployment.
Domain users should be able to manage groups within the domain they have authorization on.
Project users shouldn't be able to manage groups at all, since group entities are domain-specific.

[0] https://review.openstack.org/#/c/525706/
[1] https://review.openstack.org/#/c/525706/3/keystone/common/policies/group.py