[gnuit-list] update SSH private keys

[Nacho González López]

Hi all.

Sure you know all at about the SSL bug and his security implications. We 
are looking for faults in GNU Chapters Server and trying to solve it.

I need you to regenerate any ssh public or private key that interacts 
with chapters.gnu.org server, because tomorrow I will disallow the 
access to all old keys. If you experience any trouble regard this issue, 
please contact me and I'll try to solve as fast as I can.

Best regards,
Nacho.