Allow Services in multiple namespaces within a ForwardConfig/TargetGroup

[kevinfrommelt]

Description

Add the ability to target Services in different namespaces within a FowardActionConfig.TargetGroupTuple by providing an optional ServiceNamespace field. When this field is not provided, the namespace will default to the namespace of the Ingress object as it did before.

Checklist

• [X] Added tests that cover your change (if possible)
• [x] Added/modified documentation as required (such as the README.md, or the docs directory)
• [x] Manually tested
• [x] Made sure the title of the PR is a good description that can go into the release notes

BONUS POINTS checklist: complete for good vibes and maybe prizes?! :exploding_head:

• [x] Backfilled missing tests for code in same general area :tada:
• [ ] Refactored something and made the world a better place :star2:

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[k8s-ci-robot]

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[k8s-ci-robot]

Hi @kevinfrommelt. Thanks for your PR.

I'm waiting for a kubernetes-sigs 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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[oliviassss]

/ok-to-test

[kevinfrommelt]

/retest

[kevinfrommelt]

/test pull-aws-load-balancer-controller-e2e-test

[kevinfrommelt]

@oliviassss I rebased onto latest and retested. This is ready for review again.

[k8s-triage-robot]

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/lifecycle stale

[kevinfrommelt]

/remove-lifecycle stale

[k8s-triage-robot]

The Kubernetes project currently lacks enough contributors to adequately respond to all PRs.

This bot triages PRs according to the following rules:

• After 90d of inactivity, lifecycle/stale is applied
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/lifecycle stale

[k8s-triage-robot]

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/lifecycle rotten

[k8s-triage-robot]

The Kubernetes project currently lacks enough active contributors to adequately respond to all issues and PRs.

This bot triages PRs according to the following rules:

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/close

[k8s-ci-robot]

@k8s-triage-robot: Closed this PR.

In response to this:

The Kubernetes project currently lacks enough active contributors to adequately respond to all issues and PRs.

This bot triages PRs according to the following rules:

• After 90d of inactivity, lifecycle/stale is applied
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/close

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