[COOK-3714] Powershell features provider and delete support.

Jira : https://tickets.opscode.com/browse/COOK-3714
This adds a few related thigs:
* Powershell feature provider so that powershell feature names can be used
* Ability to override the feature provider that's used
* Action to delete the feature from the local store(New to windows8/server 2012)