fix swagger completeness issue

[yibirnba]

Latest improvements:

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Contribution checklist:

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• Validation tools were run on swagger spec(s) and have all been fixed in this PR.
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[AutorestCI]

Automation for azure-sdk-for-python

The initial PR has been merged into your service PR:
Azure/azure-sdk-for-python#8450

[AutorestCI]

Automation for azure-sdk-for-go

The initial PR has been merged into your service PR:
Azure/azure-sdk-for-go#6331

[azuresdkci]

Can one of the admins verify this patch?

[yibirnba]

Hi, making sure it won't create a breaking change in clients (instead of one function, we now have 2)

[PhoenixHe-NV]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 2 pipeline(s).

[PhoenixHe-NV]

@yibirnba CI passes after rerun.