Easily delete Unmanaged Objects.

[JAFCase]

Is your feature request related to a problem? Please describe.
Yes. Due to changes in the Rubrik CDM software in 5.x, we have changed the way that we handle removing Unmanaged Objects. We no longer allow you to delete and object if it has on-demand or scheduled snapshots still assigned to an SLA domain other than Unprotected (displayed as "Forever" in the UI.)
The result is that the Remove-RubrikUnmanagedObject PS command fails if there are any scheduled or On Demand snapshots that have a Retention SLA assigned to them.

Describe the solution you'd like
A powershell command which removes the SLA Retention from all snapshots (both scheduled and On Demand) and allows users to delete Unmanaged Objects with a single simple command.

Describe alternatives you've considered
Alternatively, we could provide PS commands for the following:

1. Assign a Rentention SLA to scheduled snapshots to Unprotected/Forever for a specific snappable.
2. Expire On Demand Snapshots for a snappable.

Additional context
Users were previously able to simply delete Unmanaged Objects in 4.x and earlier. We need to return that functionality to them.

[mwpreston]

merged