Moved elfutils.org to sourceware DNS

[Mark Wielaard]

Hi,

I moved elfutils.org to sourceware DNS. This shouldn't really impact
anything since elfutils.org is just a forward to
https://sourceware.org/elfutils/ It does make the https forward work
(previously only the http forward worked).

The debuginfod.elfutils.org server is run on elastic.org. I have added
an AAAA ipv6 record.

Technically this involved added an entry to /etc/named.conf on server2
and server3. The zone file is at /var/named/named.elfutils.org. The
forwards are in /etc/httpd/conf.d/sourceware-vhost-elfutils.conf. And
a new letsencrypt elfutils.org certificate was added with certbot.

Everything seems to work, but please let me know if you notice
anything wrong.

Cheers,

Mark