Add s390x support

[srajmane]

No description provided.

[k8s-ci-robot]

Hi @srajmane. Thanks for your PR.

I'm waiting for a bazelbuild 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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[michelle192837]

/ok-to-test

[fejta]

/ok-to-test

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: fejta, michelle192837, srajmane

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[srajmane]

/test pull-rules-k8s-e2e

[srajmane]

@fejta and @michelle192837
All checks are passing now.