RHEL 7 - Limiting AD logons using Groups

Realmd documetation states you can limit users by using the realm permit command. I need to limit access by AD groups. I am working on it now, but was wondering if anyone had already solved the problem.

In RHEL 6 I use the /etc/security/access.conf file to limit logons.

I intend to try that mechanism, but what would be nice would be that I could limit access to AD groups by using realmd.