run-cloud-providers option added
rename cloud decorator to expensive
Merge pull request #18 from rallytime/cloud_providers

run-cloud-providers option added
Decorate `setUp` as opposed to `__init__`

This way we're allowed more time to start the required Salt's testing daemons
On missing attributes, also search for it on the delegated stream.
Allow `expensiveTest` to also decorate classes
Allow `destructiveTest` to also decorate classes