HOSTEDCP-1220: Add multi-arch flag to CLI & associated validation

[bryan-cox]

What this PR does / why we need it:
Adds the multi-arch flag to the HyperShift CLI to trigger additional validation to ensure a multi-arch release image or stream was used.

Which issue(s) this PR fixes:
Fixes HOSTEDCP-1220

Checklist

• Subject and description added to both, commit and PR.
• Relevant issues have been referenced.
• This change includes docs.
• This change includes unit tests.

[openshift-ci-robot]

@bryan-cox: This pull request references HOSTEDCP-1220 which is a valid jira issue.

Warning: The referenced jira issue has an invalid target version for the target branch this PR targets: expected the story to target the "4.16.0" version, but no target version was set.

In response to this:

What this PR does / why we need it:
Adds the multi-arch flag to the HyperShift CLI to trigger additional validation to ensure a multi-arch release image or stream was used.

Which issue(s) this PR fixes:
Fixes HOSTEDCP-1220

Checklist

• Subject and description added to both, commit and PR.
• Relevant issues have been referenced.
• This change includes docs.
• This change includes unit tests.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the openshift-eng/jira-lifecycle-plugin repository.

[openshift-ci]

Skipping CI for Draft Pull Request.
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You can still manually trigger a test run with /test all

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: bryan-cox

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[bryan-cox]

/test images
/test unit
/test verify
/test e2e-aws

[bryan-cox]

/retest-required

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[bryan-cox]

/test images
/test unit
/test verify
/test e2e-aws

[bryan-cox]

/test images
/test unit
/test verify
/test e2e-aws

[jparrill]

small nit, otherwise LGTM

[jparrill]

/lgtm

[bryan-cox]

/test e2e-kubevirt-aws-ovn

[bryan-cox]

/retest

[bryan-cox]

/test e2e-kubevirt-aws-ovn

[openshift-ci-robot]

/retest-required

Remaining retests: 0 against base HEAD 0ede7f0 and 2 for PR HEAD 896297e in total

[openshift-ci]

@bryan-cox: all tests passed!

Full PR test history. Your PR dashboard.

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[openshift-bot]

[ART PR BUILD NOTIFIER]

This PR has been included in build ose-hypershift-container-v4.16.0-202403120715.p0.g331d1a5.assembly.stream.el9 for distgit hypershift.
All builds following this will include this PR.