Accept wildcard in nginx.ingress.kubernetes.io/cors-allow-headers annotation

[croemmich]

What this PR does / why we need it:

The nginx.ingress.kubernetes.io/cors-allow-headers annotation does not allow a wildcard (*) value which is allowed both by nginx and the Fetch standard.

This PR allows the use of a wildcard in the same way nginx.ingress.kubernetes.io/cors-expose-headers already did.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• CVE Report (Scanner found CVE and adding report)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation only

Which issue/s this PR fixes

fixes #10501

How Has This Been Tested?

Updated existing tests to include wildcard

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I've read the CONTRIBUTION guide
• I have added unit and/or e2e tests to cover my changes.
• All new and existing tests passed.

[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: croemmich / name: Chris Roemmich (000deb2)

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: croemmich
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[k8s-ci-robot]

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[k8s-ci-robot]

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[k8s-ci-robot]

Hi @croemmich. Thanks for your PR.

I'm waiting for a kubernetes 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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[sagar-vapi]

Hey guys,
Any chance we can merge this in? We have a dependency on it.

[k8s-ci-robot]

PR needs rebase.

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 kubernetes-sigs/prow repository.

[johseffer]

Any chance we can merge this in?