Merge pull request dotnet#13186 from nguerrera/merge-2.1.8xx-internal

Merge from 2.1.8xx internal

Merge pull request dotnet#13171 from dotnet-maestro-bot/release/2.1.6…

…xx-UpdateDependencies

Update aspnet, coresetup to servicing-31150, preview1-26216-03, respectively (release/2.1.6xx)

Merge pull request dotnet#13173 from dotnet-maestro-bot/release/2.1.5…

…xx-UpdateDependencies

Update aspnet, coresetup to servicing-31150, preview1-26216-03, respectively (release/2.1.5xx)

Merge pull request 4799 from darc-internal/release/3.1.1xx-bedc9299-4…

…a08-48ca-b554-89f2b81eaf57 into internal/release/3.1.1xx

Merged PR 4917: [internal/release/3.0.1xx] Update dependencies from d…

…nceng/internal/dotnet-sdk

This pull request updates the following dependencies

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## From https://dev.azure.com/dnceng/internal/_git/dotnet-sdk
- **Build**: 20191213.13
- **Date Produced**: 12/13/2019 10:35 PM
- **Commit**: 50e7f2820412a3d61d48ab92db1e86f346a28542
- **Branch**: refs/heads/internal/release/3.0.1xx
- **Updates**:
  - **Microsoft.NET.Sdk** -> 3.0.102-servicing.19613.13

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Merge in 'release/2.1.8xx' changes

Update branding to 2.1.608 (dotnet#13095)

Merge pull request dotnet#13094 from dotnet/branding-2.1.511

Update branding to 2.1.511

Update dependencies from https://github.com/aspnet/AspNetCore build 2…

…0191116.1 (dotnet#13079)

- Microsoft.AspNetCore.DeveloperCertificates.XPlat - 3.1.0-rtm.19566.1

Update dependencies from https://github.com/aspnet/AspNetCore build 2…

…0191105.2 (dotnet#13032)

- Microsoft.AspNetCore.DeveloperCertificates.XPlat - 3.1.0-preview3.19555.2