Binary support for s390x

[pandurangkhandeparker]

Thank you for contributing to Velero!

Signed-off-by: Pandurang Alias Aradhya Khandeparker [email protected]

Please add a summary of your change

This PR aims to add s390x support to Velero binary.

Does your change fix a particular issue?

Fixes #(issue)

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• Created a changelog file or added /kind changelog-not-required as a comment on this pull request.
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[reasonerjt]

IMHO, given we don't have resources or bandwidth to verify on zLinux, shall we let this remain downstream?

[rposts]

@reasonerjt If access to s390x system to run tests is an issue then IBM now has a public program for requesting virtual machines for s390x. A member of the Velero team can put in a request via the following form. When approved and sign-up is complete resources can be set up and delegated as appropriate. https://www.ibm.com/community/z/open-source/virtual-machines-request/

Please let us know what is required for s390x binary verification.

It will be great for s390x to be part of several ecosystem that Velero already supports which includes ppc64le and arm as well.

[kaovilai]

Are we open to unsupported binary release (at your own risk)?

[rposts]

Are we open to unsupported binary release (at your own risk)?

I think we should try to maintain fidelity with other archs - at a minimum s390x binary should pass associated testcases .

[kaovilai]

at a minimum s390x binary should pass associated testcases

How do you propose velero obtain the infra to test this? Running in github actions emulated would be very slow.

[rposts]

at a minimum s390x binary should pass associated testcases

How do you propose velero obtain the infra to test this? Running in github actions emulated would be very slow.
@kaovilai - pls see above "..A member of the Velero team can put in a request via the following form. When approved and sign-up is complete resources can be set up and delegated as appropriate. https://www.ibm.com/community/z/open-source/virtual-machines-request/ "

This is a real s390x VM which can be used to run the testcases.