Support building arm64 CAPI images

[invidian]

Both Azure and AWS supports ARM64 VMs now, so I think it would be great if image-builder would be able producing arm64 compatible images.

I see that there are already some parameters for selecting the CPU architecture, but I don't think there is a complete support for any of the platforms. Please correct me if I'm wrong.

This came out as part of working on flatcar/Flatcar#734 (comment).

/kind feature

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/lifecycle stale

[invidian]

/remove-lifecycle stale

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/lifecycle stale

[invidian]

/remove-lifecycle stale

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/lifecycle stale

[ader1990]

/remove-lifecycle stale

Would be really nice to have the option to build ARM64 images.

[AverageMarcus]

I agree. I haven't looked much but I think it's possible to create ARM64 images if you provide the right parameters but it's not clear or consistent.

/triage accepted

[ader1990]

Hello, I have added here an example using QEMU-KVM on ARM64:
#1142

[k8s-triage-robot]

This issue has not been updated in over 1 year, and should be re-triaged.

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/remove-triage accepted

[k8s-triage-robot]

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/lifecycle stale

[randomvariable]

/lifecycle frozen

This seems also important for testing on Apple Silicon machines.