WRKLDS-370: copy manifests from linux/amd64 to all manifests in a list

[soltysh]

Followup work from #1109

[soltysh]

/assign @deejross @ardaguclu

[rosspeoples]

/lgtm

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: deejross, soltysh

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[openshift-bot]

/retest-required

Please review the full test history for this PR and help us cut down flakes.

[openshift-bot]

/retest-required

Please review the full test history for this PR and help us cut down flakes.

[openshift-bot]

/retest-required

Please review the full test history for this PR and help us cut down flakes.

[openshift-ci]

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

Test name	Commit	Details	Required	Rerun command
ci/prow/e2e-metal-ipi-ovn-ipv6	39d1efe	link	false	/test e2e-metal-ipi-ovn-ipv6

Full PR test history. Your PR dashboard.

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