[BALUG-Admin] BALUG VM Debian oldstable --> stable

[Michael Paoli]

Okay, one more time ... hopefully relatively smoothly this time.
Have done fair bit more thorough testing, essentially on
"cloned" virtual machines (while also taking the appropriate
precautions to avoid conflicts with the running production).

Anyway, will restart the upgrade process soon.
If all goes relatively smoothly, should be complete after
a few hours or so.

Services - for the most part will mostly remain up and operational
throughout, but there will definitely be at least some disruptions,
due to some required reboot(s) and stopping and restarting of
services.  I'll update once things have completed and things
look good ... or any substantially different results.

This BALUG VM is the host that supports essentially all (except some
additional DNS slaves) services of:
BALUG
and likewise excepting list services, for:
SF-LUG
BerkeleyLUG

references/excerpts:
https://lists.balug.org/pipermail/balug-admin/2020-February/001017.html
https://lists.balug.org/pipermail/balug-admin/2020-February/001018.html
http://linuxmafia.com/pipermail/conspire/2020-April/010521.html
http://linuxmafia.com/pipermail/conspire/2020-April/010525.html