Backport of Allow users to explicitly disable sidecar health checks for a service into release/0.49.x

[thisisnotashwin]

Backport

This PR is auto-generated from #1824 to be assessed for backporting due to the inclusion of the label backport/0.49.x.

WARNING automatic cherry-pick of commits failed. Commits will require human attention.

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The below text is copied from the body of the original PR.

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Changes proposed in this PR:

• This adds the annotation required for supporting proxy readiness checks. This will be backported to 1.0.x and 0.49.x given the following commits will be separate on the main and 0.49.x branch.

Checklist:

• CHANGELOG entry added

  HashiCorp engineers only, community PRs should not add a changelog entry.
  Entries should use present tense (e.g. Add support for...)

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Overview of commits

• cd5d1df

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