Merge pull request dotnet/corefx#34354 from dotnet-maestro-bot/master-UpdateDependencies
authorJosh Free <joshfree@users.noreply.github.com>
Fri, 4 Jan 2019 19:28:23 +0000 (11:28 -0800)
committerGitHub <noreply@github.com>
Fri, 4 Jan 2019 19:28:23 +0000 (11:28 -0800)
Update CoreClr, CoreFx to preview-27304-02, preview.19054.1, respectively (master)

Commit migrated from https://github.com/dotnet/corefx/commit/4f3baf982bbeacdd164cf125f839f91787816d2d


Trivial merge