[master] Update dependencies from dotnet/core-sdk

[dotnet-maestro]

This pull request updates the following dependencies

From https://github.com/dotnet/core-sdk

• Build: 20191011.7
• Date Produced: 10/11/2019 8:40 PM
• Commit: 80738a98d1368dbb7bcb178affd1807fed9878fc
• Branch: refs/heads/release/3.0.1xx
• Updates:
  • Microsoft.Dotnet.Sdk.Internal -> 1.0.0-preview.19511.7

[dotnet-maestro]

Auto-Merge Status

This pull request has been merged because the following merge policies have succeeded.

• ✔️ Standard Merge Policies Succeeded - Successful checks: performance-ci, performance-ci (ubuntu 1804 x64 roslyn netcoreapp3.0), performance-ci (ubuntu 1804 x64 mlnet netcoreapp3.0), performance-ci (ubuntu 1804 x64 roslyn netcoreapp5.0), performance-ci (ubuntu 1804 x64 mlnet netcoreapp5.0), performance-ci (ubuntu 1804 x64 micro netcoreapp2.1), performance-ci (windows RS5 x64 roslyn netcoreapp3.0), performance-ci (ubuntu 1804 x64 micro netcoreapp2.2), performance-ci (windows RS5 x64 roslyn netcoreapp5.0), performance-ci (ubuntu 1804 x64 micro netcoreapp3.0), performance-ci (ubuntu 1804 x64 micro netcoreapp5.0), performance-ci (windows RS5 x86 micro netcoreapp5.0), performance-ci (windows RS5 x64 micro netcoreapp2.1), performance-ci (windows RS5 x64 mlnet netcoreapp3.0), performance-ci (windows RS5 x64 micro netcoreapp2.2), performance-ci (windows RS5 x64 mlnet netcoreapp5.0), performance-ci (windows RS5 x64 micro netcoreapp3.0), performance-ci (windows RS5 x64 micro netcoreapp5.0), performance-ci (windows RS4 x64 micro_net461 net461)
• ✔️ Standard Merge Policies Succeeded - No reviews have requested changes.