Mlc swagger fixes

[joshanator]

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Changelog

Please ensure to add changelog with this PR by answering the following questions.

1. What's the purpose of the update?
   • new service onboarding
   • new API version
   • update existing version for new feature
   • update existing version to fix swagger quality issue in s360
   • Other, please clarify
2. When you are targeting to deploy new service/feature to public regions? Please provide date, or month to public if date is not available yet.
3. When you expect to publish swagger? Please provide date, or month to public if date is not available yet.
4. If it's an update to existing version, please select SDKs of specific language and CLIs that require refresh after swagger is published.
   • SDK of .NET (need service team to ensure code readiness)
   • SDK of Python
   • SDK of Java
   • SDK of Js
   • SDK of Go
   • PowerShell
   • CLI
   • Terraform
   • No, no need to refresh for updates in this PR

Contribution checklist:

• I commit to follow the Breaking Change Policy of “no breaking changes
• I have reviewed the documentation for the workflow.
• Validation tools were run on swagger spec(s) and errors have all been fixed in this PR. How to fix?

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ARM API Review Checklist

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  • Adding new API(s)
  • Adding a new API version
  • Adding a new service

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Breaking Change Review Checklist

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• Removing API(s) in stable version
• Removing properties in stable version
• Removing API version(s) in stable version
• Updating API in stable version with Breaking Change Validation errors
• Updating API(s) in preview over 1 year

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