imfreedom/teamcity-ansible

A bunch of updates. I added two new FreeBSD 12.1 build agent VM's, two new
OpenBSD 6.8 build agent VM's, and removed two outdated build agents I ran.
Also did a bunch of work to get the teamcity agent to run via init script
on OpenBSD.
[simple]
rekkanoryo-raspberrypi ansible_host=raspberrypi teamcity_agent_name='rekkanoryo-raspberrypi' teamcity_home=/srv/teamcity/ meson_install_from_pip=true