Update BuildTools, CoreClr, CoreFx, CoreSetup, ProjectNTfs, ProjectNTfsTestILC to preview1-03122-05, preview1-26822-04, preview1-26822-04, preview1-26822-01, beta-26822-00, beta-26822-00, respectively (master) (dotnet/corefx#31853)
* Update BuildTools, CoreClr, CoreFx, CoreSetup, ProjectNTfs, ProjectNTfsTestILC to preview1-03122-05, preview1-26822-04, preview1-26822-04, preview1-26822-01, beta-26822-00, beta-26822-00, respectively
* Undo buildtools update
Commit migrated from https://github.com/dotnet/corefx/commit/
eceff3b84d3a6e1865aab09f3ee9a4be9ae4d5ce