[db-wg] Prevent use of RIPE-NCC-RPSL-MNT in a mnt-by

On 14/05/2015 19:27, denis wrote:
> To prevent this situation getting any worse is, I believe, a one line fix
> in the software. Adding this MNTNER name to a list of MNTNERs kept in the
> software that users cannot directly reference will:
> -prevent any new direct reference being made in user's objects
> -force users to replace it with their own MNTNER if they want to update an
> object that has a reference to this MNTNER
> -have no impact on the intended use for hierarchical authorisaton
> 
> I can't imagine anyone not agreeing with this, so if we get a few +1s the
> NCC can implement this in the next software release.

sounds good to me.

Nick