Merge pull request dotnet/core-setup#4270 from dotnet-maestro-bot/master-UpdateDepend...
authorWes Haggard <weshaggard@users.noreply.github.com>
Thu, 21 Jun 2018 00:22:28 +0000 (17:22 -0700)
committerGitHub <noreply@github.com>
Thu, 21 Jun 2018 00:22:28 +0000 (17:22 -0700)
Update BuildTools, CoreFx to preview1-02920-01, preview1-26620-03, respectively (master)

Commit migrated from https://github.com/dotnet/core-setup/commit/fc01d680003537e31f2a0714105bf5f737dcd9cc


Trivial merge