Merge pull request dotnet/core-setup#3692 from dotnet-maestro-bot/master-UpdateDepend...
authorWes Haggard <weshaggard@users.noreply.github.com>
Thu, 15 Feb 2018 20:26:20 +0000 (12:26 -0800)
committerGitHub <noreply@github.com>
Thu, 15 Feb 2018 20:26:20 +0000 (12:26 -0800)
Update BuildTools, CoreFx to preview2-02515-01, preview2-26215-04, respectively (master)

Commit migrated from https://github.com/dotnet/core-setup/commit/b20a51c4cc3396ee41b5ea0ac2d169c67d1cfb45


Trivial merge