Config server feature
This patch adds the ability to manage config server connections within
conductor. The concept is that a user should be able to add and manage a config
server connection for each provider account.
The overview of changes are:
* updated the provider account "show" view to allow the user to add, edit,
delete, and test a config server connection
* added config server model, controller, and views
* added spec and cucumber tests for the config server feature