Adding salt.config to mock
Merge branch 'develop' of https://github.com/saltstack/salt-cloud into develop
Merge pull request #494 from s0undt3ch/develop

Enforce the new providers configuration. Refs #239
Merge pull request #508 from s0undt3ch/develop

We can now blacklist cloud functions, no need to override them.
Minor fixes and corrections to the config doc.