Need a way to retrieve sensor data through the management network.

[cbiffle]

It looks like sensor data isn't currently plumbed through any of our IP services (unless I missed one). This means we can't easily get at sensor data in release images if we don't have physical access. In #1591 Matt was able to use readvar to get around this, but that's not ideal for a bunch of reasons --- it's hard to operate, it exposes internal state (which in this case had confusing results), and it has deep dependencies on the build archive.

In the short term, we could expose sensor data through gimlet-inspector for debugging.

In the not-short-term, we're going to need a way to evacuate sensor data up through the control plane.

Filing this issue to keep track.

[cbiffle]

lol nevermind, @jgallagher pointed out that I just missed the interface because my regular expression was wrong.