alpn-policy: Don't require TLS target groups

[iAnomaly]

Issue

#2145

Description

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 🌟

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[k8s-ci-robot]

Hi @iAnomaly. 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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[iAnomaly]

I signed it

[kishorj]

/ok-to-test

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: iAnomaly, kishorj

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[kishorj]

/lgtm

[bixu]

@kishorj, any idea when v2.3.0 will release? @iAnomaly's work will, we think, unblock my org's efforts to proxy OpenTelemetry gRPC traces through our NLBs.

CC: @ limoges / @svrakitin