All provider specific settings have been moved to the
provider section. The image name itself is now located
at the top level and called "name". It is required for all providers.
The work consists of three parts:
* Allow for bootstrapping remotely,
this makes it possible to run the tests
on e.g. OSX with VirtualBox installed
* Make bootstrapping a fully automated process
where the manifests can be generated by the tests
and the tests can call the bootstrapper directly in python
* Create a framework wherein instances can be booted up
using the bootstrapped images and subsequently tested
