Remote SSH support for FreeBSD servers

[ohmantics]

Sanity checks

• [X] I have searched github.com/withfig/fig/issues and there are no duplicates of my feature

Feature Details

Many of the ssh sessions I do are into FreeBSD servers. They include firewalls (pfSense), storage appliances (TrueNAS), and jails to contain various applications.

This is the sole feature that would keep me from paying for the Pro plan since the ssh support isn't useful to me without FreeBSD remote support.

[ohmantics]

Just started trying to work on an autocomplete to submit for Hacktober, but the create-spec script is failing for my manually-hacked FreeBSD install. Would love to be able to do this.