WIP - Adding tutum support

This is a WIP PR for adding tutum support to fog.

Tutum is a docker container PAAS providing three main models, containers, images and applications. An application consists of N containers based off of the same image. 

Still todo

* Add requests and tests
* Get all tests working
I think you can just drop `succeeds`. I think it just expects a block which returns true. Should fix the issue you were having with the test related error I think/hope