[Microsoft.Billing] Add missing reseller property.

[wilcobmsft]

Latest improvements:

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[openapi-sdkautomation]

In Testing, Please Ignore

[Logs] (Generated from 986469b, Iteration 9)

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

• Microsoft.Azure.Management.Billing [Logs] [Instructions]
  • Microsoft.Azure.Management.Billing.2.1.1-preview.nupkg
  • Microsoft.Azure.Management.Billing.2.1.1-preview.snupkg

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

• azure-mgmt-billing [Logs] [Instructions] [Generation PR]
  • azure-mgmt-billing-0.2.0.zip
  • azure_mgmt_billing-0.2.0-py2.py3-none-any.whl

Java: test-repo-billy/azure-sdk-for-java [Logs] [Diff]

• billing/resource-manager/v2017_02_27_preview [Logs]
• billing/resource-manager/v2017_04_24_preview [Logs]
• billing/resource-manager/v2018_03_01_preview [Logs]
• billing/resource-manager/v2018_11_01_preview [Logs]
• billing/resource-manager/v2019_10_01_preview [Logs]

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

• preview/billing/mgmt/2017-02-27-preview [Logs]
• preview/billing/mgmt/2017-04-24-preview [Logs]
• preview/billing/mgmt/2018-03-01-preview [Logs]
• preview/billing/mgmt/2018-11-01-preview [Logs] [Instructions] [Generation PR]
  • preview.billing.mgmt.2018-11-01-preview.zip

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

• @azure/arm-billing [Logs] [Instructions]
  • azure-arm-billing-2.2.0.tgz

Ruby: test-repo-billy/azure-sdk-for-ruby [Logs] [Diff]

• No packages generated.

[AutorestCI]

Automation for azure-sdk-for-python

The initial PR has been merged into your service PR:
Azure/azure-sdk-for-python#6867

[AutorestCI]

Automation for azure-sdk-for-go

Nothing to generate for azure-sdk-for-go

[azuresdkci]

Can one of the admins verify this patch?