Add new Update-RubrikNutanixCluster cmdlet

[jaapbrasser]

Description

Is your feature request related to a problem? Please describe.

Customer needs to refresh Nutanix Cluster after restoring replicated vms in AHV and be able to start backup on Rubrik

Describe the solution you'd like

Customer needs to use the following endpoint nutanix/cluster/$($_.id)/refresh every time new vms are restored into AHV central cluster so Rubrik will be updated once Acropolis its updated.

Describe alternatives you've considered

Customer is using CURL to same endpoint or Invoke-RubrikRESTCall

Additional context

By using above methods customer could see all vms updated in Rubrik GUI

Related Issue

Resolve #669
Resolve #670

Motivation and Context

Why is this change required? What problem does it solve?

How Has This Been Tested?

New unit tests have been written, old ones pass

Screenshots (if appropriate):

Types of changes

What types of changes does your code introduce? Put an x in all the boxes that apply:

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

Go over all the following points, and put an x in all the boxes that apply. If you're unsure about any of these, don't hesitate to ask. We're here to help!

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTION document.
• I have updated the CHANGELOG file accordingly for the version that this merge modifies.
• I have added tests to cover my changes.
• All new and existing tests passed.

[mwpreston]

Looks good! Fixed up some documentation but other than that - Awesome!