Rebasing .NET SDK To Version 1.31.1 With Instance Failover Group APIs

[ziwa-msft]

Description

I have rebased the .Net SDK to 1.13.1 by cherrypicking changes for InstanceFailoverGroup on top of the 1.13.0 branch.

The files are generated by targeting composite v2 APIs. Link to swagger template: ziwa-msft/azure-rest-api-specs@b2b5156

We have verified that all tests are passing locally.

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• [ x] Please add REST spec PR link to the SDK PR
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• [x ] Title of the pull request is clear and informative.
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Testing Guidelines

• [ x] Pull request includes test coverage for the included changes.

SDK Generation Guidelines

• [x ] If an SDK is being regenerated based on a new swagger spec, a link to the pull request containing these swagger spec changes has been included above.
• [x ] The generate.cmd file for the SDK has been updated with the version of AutoRest, as well as the commitid of your swagger spec or link to the swagger spec, used to generate the code.
• [x ] The *.csproj and AssemblyInfo.cs files have been updated with the new version of the SDK.

[jaredmoo]

Looks great other than release notes. Thx

[jaredmoo]

Please delete the current release notes and add new release notes:

- Added support for Managed Instances, Managed Instance databases, and Managed Instance failover groups.

[ziwa-msft]

Thanks Jared. I have update the release note now.

[dsgouda]

LGTM

[dsgouda]

Will merge once CI passes

[dsgouda]

@ziwa-msft while you are at it, please pull down the latest changes from upstream and run the code generation again (the txt file should not be displayed as a binary on the PR)