Feat add azure arm64 support

[natitomattis]

Change description

Add support for Azure Arm64 builds:

• Added variables for architecture where necessary.
• Removed support for deprecated azure managed instances https://learn.microsoft.com/en-us/azure/virtual-machines/migration/migration-managed-image-to-compute-gallery?tabs=portal
• Upgraded azure packer plugin

• Is this change including a new Provider or a new OS? (y/n) n
• If yes, has the Provider/OS matrix been updated in the readme? (y/n) n
• If adding a new provider, are you a representative of that provider? (y/n) n

Related issues

Additional context

[k8s-ci-robot]

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[k8s-ci-robot]

Hi @natitomattis. Thanks for your PR.

I'm waiting for a kubernetes-sigs member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[AverageMarcus]

Removed support for deprecated azure managed instances learn.microsoft.com/en-us/azure/virtual-machines/migration/migration-managed-image-to-compute-gallery?tabs=portal

Is this change required for this PR? If not I think it might be best to have it in its own PR so we can specifically call this out in the changelog.

Would you mind squashing your commits too please?

/ok-to-test

[k8s-ci-robot]

@natitomattis: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pull-azure-sigs	7f930a7	link	false	/test pull-azure-sigs
pull-azure-vhds	7f930a7	link	true	/test pull-azure-vhds
pull-packer-validate	7f930a7	link	true	/test pull-packer-validate

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

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[AverageMarcus]

😞 Looks like we're blocked by this: hashicorp/packer-plugin-azure#526

[natitomattis]

On my environment I've followed the steps described here and I could install it. Probably I'll need to update the installation on this repo as well

[natitomattis]

@AverageMarcus Sorry I just saw this comment:

Is this change required for this PR? If not I think it might be best to have it in its own PR so we can specifically call this out in the changelog.

Yes it is required, since the base ARM image doesn't require the pan information. If we add the plan details it fails.

[AverageMarcus]

FYI - we're discussing the issue with the plugin install change on Slack here: https://kubernetes.slack.com/archives/C01E0Q35A8J/p1754927876822259

[k8s-ci-robot]

PR needs rebase.

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