It would be nice to track cost info in host records, similar to the work in
EVG-1170 to add cost info to tasks.
I can do this offline after the fact for analysis, but Amazon's data only goes back 90 days and the spot instance price history API is really slow.
This will make it easier to do things like compare host costs to hypothetical costs for other service providers or types of instances at AWS.
Ideally we could have the hourly price recorded in addition to the "actual" cost which takes start/end time into account.