docs: added example for multiple certificates to Service annotation

[raghu-manne]

Description

Added example for specifying multiple certificates ARN's in the service annotation for service.beta.kubernetes.io/aws-load-balancer-ssl-cert
https://kubernetes-sigs.github.io/aws-load-balancer-controller/latest/guide/service/annotations/#tls

Checklist

• Added tests that cover your change (if possible)
• Added/modified documentation as required (such as the README.md, or the docs directory)
• Manually tested
• 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?! 🤯

• Backfilled missing tests for code in same general area 🎉
• Refactored something and made the world a better place 🌟

[k8s-ci-robot]

Welcome @raghu-manne!

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[k8s-ci-robot]

Hi @raghu-manne. 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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[zac-nixon]

/lgtm

[zac-nixon]

Thank you for the doc update :)

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: raghu-manne, zac-nixon

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Needs approval from an approver in each of these files:

• OWNERS [zac-nixon]

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[k8s-ci-robot]

@raghu-manne: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pull-aws-load-balancer-controller-e2e-test	0463478	link	true	/test pull-aws-load-balancer-controller-e2e-test

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

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. I understand the commands that are listed here.

[raghu-manne]

@zac-nixon I was confused to use this feature since there is no documentation. Then I had to try it myself before changing the docs.

I see the PR is approved, is there anything to be done from myside to rerun the tests?

[raghu-manne]

/retest

[k8s-ci-robot]

@raghu-manne: Cannot trigger testing until a trusted user reviews the PR and leaves an /ok-to-test message.

In response to this:

/retest

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.