DNSSEC: Remove service containers from LDAP after uninstalling
    
    The service containers are no needed there after uninstall anymore.
    Removing these service also allows to detect if DNSSEC master is
    installed on any replica for any user.
    
    https://fedorahosted.org/freeipa/ticket/5290
    
    Reviewed-By: Petr Spacek <pspacek@redhat.com>