fix(appsync): rds data source configured with cluster arn

[BryanPan342]

Lazily add a formatted cluster arn to the RdsHttpEndpointConfig. Before we were just adding the cluster id, but the docs call for the Cluster Arn instead.

Fixes: #11536

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[gitpod-io]

[BryanPan342]

@MrArnoldPalmer Not sure what the issue is with the check, but if you can point me in the right direction I can fix it

[MrArnoldPalmer]

@Mergifyio update

[mergify]

Command update: success

Branch has been successfully updated

[MrArnoldPalmer]

@BryanPan342 we had an issue with codebuild log comments not being published. I refreshed to trigger a rebuild as this should be fixed.

[MrArnoldPalmer]

👍🏻 TY @BryanPan342 !!

[mergify]

Thank you for contributing! Your pull request will be updated from master and then merged automatically (do not update manually, and be sure to allow changes to be pushed to your fork).

[aws-cdk-automation]

AWS CodeBuild CI Report

• CodeBuild project: AutoBuildProject6AEA49D1-qxepHUsryhcu
• Commit ID: cc44f42
• Result: SUCCEEDED
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[mergify]

Thank you for contributing! Your pull request will be updated from master and then merged automatically (do not update manually, and be sure to allow changes to be pushed to your fork).