RFC: Change how BMC operations are mapped

I like the new mapping, and it clearly tells you what to expect.

This also needs to tie into the “Build” dialog, where there’s a mention of reboot, which is actually not possible via IPMI.

Apart from remapping the current power action names, is there a necessity to support “Reboot”?
It would need to be implemented as a “Safe shutdown”, wait until power state reports off, and then “Power on”, which would require a long running background tasks (5 - 10 minutes)