Arc enable nodes before registration in latest Registration Flow

[Samhitha-Microsoft]

Description

Previously, the idea was that the user would enable Arc on their own and then trigger registration. But, now due to redefined requirements, we want ARC enablement to be part of the script itself similar to the old way of registration.

Also, There is an issue where access is being denied as there is new session being created in the already existing remote session. Hence, added a flag to prevent creation of new PS session.

Mandatory Checklist

• Please choose the target release of Azure PowerShell. (⚠️Target release is a different concept from API readiness. Please click below links for details.)

  • General release
  • Public preview
  • Private preview
  • Engineering build
  • No need for a release

• Check this box to confirm: I have read the Submitting Changes section of CONTRIBUTING.md and reviewed the following information:

• SHOULD update ChangeLog.md file(s) appropriately
  • Update src/{{SERVICE}}/{{SERVICE}}/ChangeLog.md.
    • A snippet outlining the change(s) made in the PR should be written under the ## Upcoming Release header in the past tense.
  • Should not change ChangeLog.md if no new release is required, such as fixing test case only.
• SHOULD regenerate markdown help files if there is cmdlet API change. Instruction
• SHOULD have proper test coverage for changes in pull request.
• SHOULD NOT adjust version of module manually in pull request

[azure-client-tools-bot-prd]

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[Copilot]

Pull request overview

This pull request implements automatic Arc enablement as part of the HCI cluster registration flow using Managed Service Identity (MSI). Previously, users were required to manually enable Azure Arc on cluster nodes before triggering registration. This change automates that process by adding Arc enablement logic directly into the registration script.

Key Changes

• Added new Enable-ArcOnNodes function that installs and configures Azure Connected Machine Agent on cluster nodes
• Modified Invoke-MSIFlow to automatically enable Arc on nodes if they are not already Arc-enabled
• Updated ChangeLog.md to document the new Arc enablement behavior

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 10 comments.

File	Description
src/StackHCI/StackHCI/ChangeLog.md	Added changelog entry for Arc enablement feature (contains formatting and spelling issues)
src/StackHCI/StackHCI.Autorest/custom/stackhci.ps1	Implemented Enable-ArcOnNodes function and integrated it into MSI registration flow (missing parameter definition, lacks documentation and test coverage)

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[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated 11 comments.

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[isra-fel]

/azp run

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Azure Pipelines successfully started running 3 pipeline(s).

[isra-fel]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 3 pipeline(s).

[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated 9 comments.

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[isra-fel]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 3 pipeline(s).