Azure Site Recovery - Adding support for V2A RCM provider in PowerShell

[imshashwataggarwal]

Description

This PR adds PowerShell support for V2A RCM provider in RecoveryServices module. The PowerShell cmdlets are intended for VMware to Azure disaster recovery scenarios. Customers can use these cmdlets to protect their vCenter VMs/physical servers to Azure and reprotect them back to on-premises after a successful failover.

Swagger PR: Azure/azure-rest-api-specs#13525
SDK PR: Azure/azure-sdk-for-net#20004
Design Review: https://github.com/Azure/azure-powershell-cmdlet-review-pr/issues/915

Checklist

• I have read the Submitting Changes section of CONTRIBUTING.md
• The title of the PR is clear and informative
• The appropriate ChangeLog.md file(s) has been updated:
  • For any service, the ChangeLog.md file can be found at src/{{SERVICE}}/{{SERVICE}}/ChangeLog.md
  • A snippet outlining the change(s) made in the PR should be written under the ## Upcoming Release header -- no new version header should be added
• The PR does not introduce breaking changes
• If applicable, the changes made in the PR have proper test coverage
• For public API changes to cmdlets:
  • a cmdlet design review was approved for the changes in this repository (Microsoft internal only)
    • https://github.com/Azure/azure-powershell-cmdlet-review-pr/issues/915
  • the markdown help files have been regenerated using the commands listed here

[wyunchi-ms]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 3 pipeline(s).

[wyunchi-ms]

LGTM

[imshashwataggarwal]

LGTM

@wyunchi-ms, can you please merge?