Update MSI tests to use new output directory layout

(cherry picked from commit 2222290394)

build/package/Installer.MSI.targets

@@ -199,7 +199,8 @@
 
       <Exec Command ="powershell -NoProfile -NoLogo $(SdkTestMsiPowershellScript)
                       -InputMsi '$(SdkInstallerFile)'
-                      -DotnetDir '$(PreviousStageDirectory)'" />
+                      -DotnetDir '$(PreviousStageDirectory)'
+                      -TestDir '$(TestOutputDir)'" />
 
       <WriteLinesToFile
           File="$(SdkMsiTestedSentinel)"

test/Installer/testmsi.ps1

@@ -3,7 +3,8 @@
 
 param(
     [string]$InputMsi,
-    [string]$DotnetDir
+    [string]$DotnetDir,
+    [string]$TestDir
 )
 
 . "$PSScriptRoot\..\..\scripts\common\_common.ps1"
@@ -37,7 +38,7 @@ if(!(Test-Path $inputMsi))
 
 $testName = "Microsoft.DotNet.Cli.Msi.Tests"
 $testProj="$PSScriptRoot\$testName\$testName.csproj"
-$testBin="$RepoRoot\artifacts\tests\$testName"
+$testBin="$TestDir\$testName"
 
 pushd "$DotnetDir"