Come up with a list of VMs and their specs

For DC20 we had:

• ams1.live.debconf.org
• backend.live.debconf.org
• blr1.live.debconf.org
• encoder1.online.debconf.org
• encoder2.online.debconf.org
• grabber1.online.debconf.org
• gva1.online.debconf.org
• jibri1.online.debconf.org
• jibri2.online.debconf.org
• jibri3.online.debconf.org
• jitsi.online.debconf.org
• obs1.online.debconf.org
• pad.online.debconf.org
• prometheus.online.debconf.org
• review.online.debconf.org
• sfo1.online.debconf.org
• sfo2.online.debconf.org
• sgp1.online.debconf.org
• voctomix1.online.debconf.org
• voctomix2.online.debconf.org

Sadly, we lost the machine specs since the prometheus data was wiped out