APIM SDK changes for the Spec update of version 2020-12-01

[KacieKK]

All SDK Contribution checklist:

api spec PR: Azure/azure-rest-api-specs#12904
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Testing Guidelines

• Pull request includes test coverage for the included changes.

SDK Generation Guidelines

• 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. (Track 2 only)
• The *.csproj and AssemblyInfo.cs files have been updated with the new version of the SDK. Please double check nuget.org current release version.

Additional management plane SDK specific contribution checklist:

Note: Only applies to Microsoft.Azure.Management.[RP] or Azure.ResourceManager.[RP]

• Include updated management metadata.
• Update AzureRP.props to add/remove version info to maintain up to date API versions.

Management plane SDK Troubleshooting

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  Note: We have recently updated the PSH module called by generate.ps1 to emit additional data. This would help reduce/eliminate the Code Verification check error. Please run following command:

    `dotnet msbuild eng/mgmt.proj /t:Util /p:UtilityName=InstallPsModules`
  

Old outstanding PR cleanup

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[markcowl]

@KacieKK See my comments in teams on how to fix the current issue.

[markcowl]

One minor change to the csproj, otherwise, this looks good.

[markcowl]

Is this AKA link still valid? You should provide some text here, as people use this to decide whether to download the package or not.

[KacieKK]

yes, this AKA will point to CHANGELOG.md, where documents the changes of this new version

[solankisamir]

@markcowl once this PR is merged, the aka.ms link will point to the correct changelog. I hope that is okay?