[ironic] A first-class physical location API?

Something I've seen come up in a few discussions over the last couple of cycles is the need for Ironic to contain more useful information about the physical world. It's made me wonder if there's an opportunity to add bigger support for physical characteristics/locations? I'm thinking metadata like: - Datacenter the server is in - Computer room (or other DC subdivision) - Row - Rack - Slot # - Physical cabling (e.g. what switches you might be connected to and how) Do other folks see this need? I'm trying to tease out if there's something here or not, so just curious about use cases and what people think. -Jay