Add Service for Storm

Add a new service for deploying Apache Storm (incubating).

http://incubator.apache.org/projects/storm.html

Storm is a distributed, fault-tolerant, and high-performance realtime computation system that provides strong guarantees on the processing of data.

I've started a preliminary implementation available here: https://github.com/ptgoetz/whirr-storm

If there's interest, I can submit it as a patch when it's more complete.