Support BMC actions as part of a workflow

[jacobweinstock]

Summary

Currently, running Rufio actions against hardware is not builtin to a workflow. Users must create the jobs/tasks manually. Making this builtin to a workflow and optionally enabled would be very valuable.

The initial thought here is that this would be the responsibility of the tink controller. We could start off by just having a single option. Something that would get a machine into a networking booting state. The user experience would probably be just a boolean. netboot: true for example. This would be an opt-in feature. This would also probably only run as an initial step, not something you would be able to specify during the course of a running workflow.