Provide Nasqueron FreeBSD packages catalogue
Summary:
FreeBSD packages are available at https://packages.nasqueron.org/freebsd/
since 75947e1f2a07af5d8.
This change allows each FreeBSD server to acess it.
Test Plan: pkg search salt-tower
Reviewers: dereckson
Reviewed By: dereckson
Differential Revision: https://devcentral.nasqueron.org/D2868