Chart: Add .spec.trafficDistribution support for controller services

[aofei]

What this PR does / why we need it:

Add support for .spec.trafficDistribution field in controller service configuration to route traffic to endpoints that are topologically closer to the client.

Ref: https://kubernetes.io/docs/concepts/services-networking/service/#traffic-distribution

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

How Has This Been Tested?

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]

• ✅login: aofei / (1a51fe1)

The committers listed above are authorized under a signed CLA.

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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

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[k8s-ci-robot]

Hi @aofei. Thanks for your PR.

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[netlify]

✅ Deploy Preview for kubernetes-ingress-nginx canceled.

Name	Link
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[Gacko]

/triage accepted
/kind feature
/priority backlog
/hold

Could you please extend the existing unit tests? Thank you!