[mono][tests] Fix tests on mono, by using the correct error strings (#4347)
[mono][tests] Fix tests on mono, by using the correct error strings (#4347)

Microsoft.Build.Tasks.UnitTests.Unzip_Tests.LogsErrorIfReadOnlyFileCannotBeOverwitten
rainersigwald/msbuild,mono/msbuild,jeffkl/msbuild,rainersigwald/msbuild,cdmihai/msbuild,chipitsine/msbuild,cdmihai/msbuild,mono/msbuild,AndyGerlicher/msbuild,AndyGerlicher/msbuild,sean-gilliam/msbuild,mono/msbuild,jeffkl/msbuild,mono/msbuild,chipitsine/msbuild,AndyGerlicher/msbuild,rainersigwald/msbuild,jeffkl/msbuild,sean-gilliam/msbuild,rainersigwald/msbuild,sean-gilliam/msbuild,jeffkl/msbuild,cdmihai/msbuild,chipitsine/msbuild,chipitsine/msbuild,sean-gilliam/msbuild,AndyGerlicher/msbuild,cdmihai/msbuild