Comment 7 for bug 1618513

Update: Andrey pointed out that the policy of RULE_ADMIN_API is only enforced if the 'tenant_id' GET parameter is present [1] which would only be the case when the user is asking for usage for a *different* project than its own. Otherwise, it's allowed to get usage for its own project. So indeed it doesn't look like a bug on the used limits side.

It was probably similar confusion that made the quota-sets side admin-only.

[1] https://github.com/openstack/nova/blob/48268c7/nova/api/openstack/compute/used_limits.py#L71