Dropping support for EoL FreeBSD versions in sysutils/py-salt

From: Alan Somers <asomers_at_freebsd.org>
Date: Tue, 07 Jun 2022 17:34:18 UTC
Saltstack is discussing whether to drop support for EoL FreeBSD
versions.  There's a fair amount of code that exists just to handle
FreeBSD < 10.0.  Does anybody still use Saltstack on FreeBSD with EoL
releases?  If so, comment on this thread:

https://github.com/saltstack/salt/issues/61167