Get AuthTLS annotation unit tests to 100%

[diazjf]

Adds more unit tests for the authtls annotation. Increases the coverage 💯

[k8s-ci-robot]

Hi @diazjf. Thanks for your PR.

I'm waiting for a kubernetes 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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[aledbf]

/ok-to-test

[aledbf]

/lgtm
/approve

[aledbf]

@diazjf thanks!

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: aledbf, diazjf

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