key rollover: telnetd-ssl, ftpd-ssl, ckermit

[Moritz Muehlenhoff <jmm@inutil.org>]

Written by Ian Beckwith, with minor modications.

telnetd-ssl
===========

rm -f /etc/telnetd-ssl/telnetd.pem /etc/ssl/certs/telnetd.pem
dpkg-reconfigure telnetd-ssl

This covers the default setup. If the local admin has setup further
SSL infrastructure beyond that, these keys will need to be regenerated
as well.

ftpd-ssl:
========

rm -f /etc/ftpd-ssl/ftpd.pem /etc/ssl/certs/ftpd.pem
dpkg-reconfigure ftpd-ssl

This covers the default setup. If the local admin has setup further
SSL infrastructure beyond that, these keys will need to be regenerated
as well.

ckermit
=======

Debian's version doesn't enable crypto support due to licensing 
issues and doesn't need to be updated.