[master] Update dependencies from dotnet/core-setup

[dotnet-maestro]

This pull request updates the following dependencies

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

• Build: 20190715.11
• Date Produced: 7/16/2019 6:39 AM
• Commit: ad9f7e33fb1a1be7eefb57849e7d71a4f9a488b2
• Branch: refs/heads/master
• Updates:
  • Microsoft.NET.HostModel -> 3.0.0-preview8-27915-11

[dotnet-maestro]

Auto-Merge Status

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

• ✔️ All Checks Successful Succeeded - Successful checks: dotnet-sdk-public-ci, dotnet-sdk-public-ci (Darwin Build_Debug), dotnet-sdk-public-ci (Ubuntu_16_04 Build_Debug), dotnet-sdk-public-ci (Windows_Perf_CI_FullFramework Build_Release), dotnet-sdk-public-ci (Linux_Perf_CI Build_Release), dotnet-sdk-public-ci (Windows_Perf_CI Build_Release), dotnet-sdk-public-ci (Darwin Build_Release), dotnet-sdk-public-ci (Ubuntu_16_04 Build_Release), dotnet-sdk-public-ci (Ubuntu_14_04 Build_Release), dotnet-sdk-public-ci (Ubuntu_14_04 Build_Debug), dotnet-sdk-public-ci (Windows_NT_TestAsTools Build_Debug), dotnet-sdk-public-ci (Windows_NT_FullFramework Build_Release), dotnet-sdk-public-ci (Windows_NT Build_Release), dotnet-sdk-public-ci (Windows_NT_FullFramework Build_Debug), dotnet-sdk-public-ci (Windows_NT Build_Debug)