Upstream status of cracklib is unclear, libpwquality is an actively maintained Red Hat project, and there seems to be a general push towards using it instead of cracklib directly. https://fedorahosted.org/libpwquality/ We could also benefit from its password suggestion feature (not something Beaker offers currently).
https://gerrit.beaker-project.org/5953
Just noticed that libpwquality is not in RHEL6 (it's in EPEL6). So this can probably wait until Beaker is targetting RHEL7 only.