Go V2: Route53 - Change record sets

[tae2089]

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By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[Laren-AWS]

Thanks for your contribution!

• This submission does not fit our format for Hello examples. Hello examples target a single function that has no prerequisites, typically a list or describe function, like ListGeoLocations.
• We aren't accepting submissions for isolated single-action examples.
• If you want to submit a full scenario, include the necessary prerequisites, ideally in a CloudFormation script, and be sure to include unit tests, integration tests, and a README. See other examples in the repo and our coding standards wiki for guidance.