feat(msk): add support to get broker urls for sasl iam authenticated msk cluster

[mehatab]

Add support to get broker urls for sasl iam authenticated msk cluster

Fixes #18355

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New Features

• Have you added the new feature to an integration test?
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[gitpod-io]

[aws-cdk-automation]

AWS CodeBuild CI Report

• CodeBuild project: AutoBuildv2Project1C6BFA3F-wQm2hXv2jqQv
• Commit ID: 5d5d0f4
• Result: FAILED
• Build Logs (available for 30 days)

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[TheRealAmazonKendra]

I fixed the issue preventing the integration tests from running but the addition of another cluster will change the output and it looks like this PR doesn't update the expected output so it's failing. Please take a look.

[aws-cdk-automation]

This PR has been in the CHANGES REQUESTED state for 3 weeks, and looks abandoned. To keep this PR from being closed, please continue work on it. If not, it will automatically be closed in a week.

[aws-cdk-automation]

This PR has been deemed to be abandoned, and will be automatically closed. Please create a new PR for these changes if you think this decision has been made in error.