Comment 29 for bug 1446704

Roman, it is explicitly mentioned in radosgw keystone-based authentication part of Operations Guide for 7.0 and 8.0 releases that you have to set rgw_s3_auth_use_keystone option manually and it is not fuel-configurable. I think, that it is a feature request and we can't put it into MU. Please check the links below:
https://docs.mirantis.com/fuel/fuel-7.0/operations.html#managing-your-ceph-cluster
https://docs.mirantis.com/openstack/fuel/fuel-8.0/operations.html#managing-your-ceph-cluster