consul/.github/pull_request_template.md

### Description

<!-- Please describe why you're making this change, in plain English. -->

### Testing & Reproduction steps

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* If any manual tests were done, document the steps and the conditions to replicate
* Call out any important/ relevant unit tests, e2e tests or integration tests you have added or are adding

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### Links

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### PR Checklist

* [ ] updated test coverage
* [ ] external facing docs updated
* [ ] appropriate backport labels added
* [ ] not a security concern