Merge pull request dotnet/corefx#35415 from ViktorHofer/UWP-CI
authorViktor Hofer <viktor.hofer@microsoft.com>
Wed, 20 Feb 2019 09:16:12 +0000 (10:16 +0100)
committerGitHub <noreply@github.com>
Wed, 20 Feb 2019 09:16:12 +0000 (10:16 +0100)
Reenable UWP CI legs and upgrade to RS5

Commit migrated from https://github.com/dotnet/corefx/commit/5385874fa7ab20f9e33997ebd20f31ae272bf7c5


Trivial merge