It's worth to add that initial support for multitenancy will be available since Jewel (next LTS release of Ceph). You might be especially interested in the "rgw_keystone_implicit_tenants" option.
However, please be aware that first version of MT will have some restrictions (like lack of cross-tenant access, TempURL). We are working on covering all those features. There is a chance the changes will be later backported to Jewel.
It's worth to add that initial support for multitenancy will be available since Jewel (next LTS release of Ceph). You might be especially interested in the "rgw_keystone_ implicit_ tenants" option.
However, please be aware that first version of MT will have some restrictions (like lack of cross-tenant access, TempURL). We are working on covering all those features. There is a chance the changes will be later backported to Jewel.