Add retry logic for folder deletion in tests
Add retry logic for folder deletion in tests

sean-gilliam/msbuild,chipitsine/msbuild,rainersigwald/msbuild,mono/msbuild,jeffkl/msbuild,AndyGerlicher/msbuild,Microsoft/msbuild,sean-gilliam/msbuild,Microsoft/msbuild,mono/msbuild,cdmihai/msbuild,chipitsine/msbuild,sean-gilliam/msbuild,sean-gilliam/msbuild,jeffkl/msbuild,jeffkl/msbuild,Microsoft/msbuild,rainersigwald/msbuild,mono/msbuild,chipitsine/msbuild,AndyGerlicher/msbuild,cdmihai/msbuild,AndyGerlicher/msbuild,chipitsine/msbuild,jeffkl/msbuild,rainersigwald/msbuild,AndyGerlicher/msbuild,rainersigwald/msbuild,mono/msbuild,cdmihai/msbuild,cdmihai/msbuild,Microsoft/msbuild