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OpenBSD 6.8 build agent VM's, and removed two outdated build agents I ran.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.
[convey]
grim-reaper04 ansible_host=reaper04 teamcity_agent_name='grim-reaper04' teamcity_properties='["system.convey=True","system.buildImages=True","system.qemuUserStatic=True"]' teamcity_groups='["docker"]'