Add homelab.kanidm.enable option for central authentication via Kanidm.
The module configures:
- PAM/NSS integration with kanidm-unixd
- Client connection to auth.home.2rjus.net
- Login authorization for ssh-users group
Enable on testvm01-03 for testing.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
