adding missing readonly property (#7428)

[stack111]

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[openapi-sdkautomation]

In Testing, Please Ignore

[Logs] (Generated from d6484d8, Iteration 1)

.NET: test-repo-billy/azure-sdk-for-net [Logs] [Diff]

• Microsoft.Azure.Management.Maps [Logs] [Instructions] [Generation PR] [Integration PR]
  • Microsoft.Azure.Management.Maps.1.0.2.nupkg
  • Microsoft.Azure.Management.Maps.1.0.2.snupkg

Python: test-repo-billy/azure-sdk-for-python [Logs] [Diff]

• azure-mgmt-maps [Logs] [Instructions] [Generation PR]
  • azure-mgmt-maps-0.1.0.zip
  • azure_mgmt_maps-0.1.0-py2.py3-none-any.whl

Go: test-repo-billy/azure-sdk-for-go [Logs] [Diff]

• maps/mgmt/2017-01-01-preview [Logs] [Instructions] [Generation PR] [Integration PR]
  • maps.mgmt.2017-01-01-preview.zip
• maps/mgmt/2018-05-01 [Logs]

JavaScript: test-repo-billy/azure-sdk-for-js [Logs] [Diff]

• @azure/arm-maps [Logs] [Instructions]
  • azure-arm-maps-1.1.0.tgz

[azuresdkci]

Can one of the admins verify this patch?

[AutorestCI]

Automation for azure-sdk-for-go

A PR has been created for you:
Azure/azure-sdk-for-go#6128