Added a CI master and minion(notif).

* The `salt-ci-master` for now is just a regular salt master sub-classed.
* The `salt-ci-notif` is a sub-classed salt minion which will be responsible for notifications(email, IM, IRC, etc) by providing the required modules.
* For both of the above we start with salt's default configuration and apply some of our own defaults before loading any settings from file.