Chart: Add IngressClass aliases.

[Gacko]

What this PR does / why we need it:

Adds the possibility of defining IngressClass aliases which are identical copies of the original IngressClass but with an alias as name. This can be useful for development environments with only one Ingress Controller but production-like Ingress resources.

Thanks @slimm609 for the idea and initial work here!

I'm implementing it as the original PR got stale. Also this PR is based on two other PRs (#11104, #11108) and should only be merged after them.

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

How Has This Been Tested?

Added unit tests.

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.

[k8s-ci-robot]

Skipping CI for Draft Pull Request.
If you want CI signal for your change, please convert it to an actual PR.
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[Gacko]

/triage accepted
/kind feature
/priority backlog
/assign

[Gacko]

/cc @rikatz @cpanato

For review. 🙂

That one's not gonna be required in v1.10.x, so no cherry-picking here.

[slimm609]

@Gacko thanks for picking this up! I had not been able to get back to it due to some work issues so thanks for running with it and pushing it over the finish line! 🥂

[Gacko]

Hey @slimm609! Nice to hear from you. I hope the way I pointed out the original work / idea was from you is fine with you! :)

[slimm609]

Absolutely, i just ran into a timing issues with the acquisition of VMware and the ability to contribute as well as some personal issues. I reviewed and think it fits the use cases with no concerns from me

[rikatz]

/lgtm
/approve
Thanks!

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Gacko, rikatz, slimm609

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• charts/ingress-nginx/OWNERS [Gacko,rikatz]

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