Standardize built-in resource namespaces

[michaeltlombardi]

Summary of the new feature / enhancement

Currently, the built-in DSC Resources are named DSC/<ResourceName>, like DSC/AssertionGroup. To align with the [namespace guidance][01], we should plan to rename these resources to indicate ownership. It would also be useful to identify them as being core or built-in resources that are only upgradeable with DSC itself.

Proposed technical implementation details (optional)

I propose changing the resource namespaces to one of the following:

• Microsoft.DSC.BuiltIn
• Microsoft.DSC

This would make the AssertionGroup resource either Microsoft.DSC.BuiltIn/AssertionGroup or Microsoft.DSC/AssertionGroup.

[SteveL-MSFT]

The built-in groups will be named:

• Microsoft.DSC/Grouo
• Microsoft.DSC/Assertion
• Microsoft.DSC/Parallel