Merge pull request #16500 from dotnet-maestro-bot/release/2.1-UpdateDependencies
authorWes Haggard <weshaggard@users.noreply.github.com>
Tue, 27 Mar 2018 01:11:30 +0000 (18:11 -0700)
committerGitHub <noreply@github.com>
Tue, 27 Mar 2018 01:11:30 +0000 (18:11 -0700)
Update BuildTools, CoreClr, CoreFx, PgoData to preview2-02621-01, preview2-26324-04, preview2-26324-01, release-20180228-0037, respectively (release/2.1)


Trivial merge