Spike: job-runner hypothesis state machine tests

[madwort]

In which @madwort has some fun times experimenting

[bloodearnest]

Are you still working on this?

I suspect that the plans for RAP API work may change things enough to make it worth postponing this until then?

[madwort]

I'd intended to work on this during the deck scrubbing that just finished, but ended up spending nearly the entire time doing sysadmin stuff so didn't make much headway.