MONITOR: Add disable_netlink option
Adding a new monitor boolean option to disable netlink support.
This will give users more control over sssd state changes without
having to modify systemd unit files.
Resolves:
https://fedorahosted.org/sssd/ticket/3142
Reviewed-by: Petr Cech <pcech@redhat.com>
Reviewed-by: Jakub Hrozek <jhrozek@redhat.com>