Added script to get test regions list

JenkinsPipelines/Scripts/DetectTestRegions.ps1

@@ -0,0 +1,40 @@
+param
+(
+    $TestByTestName="",
+    $TestByCategorizedTestName="",
+    $TestByCategory="",
+    $TestByTag=""
+)
+Get-ChildItem .\Libraries -Recurse | Where-Object { $_.FullName.EndsWith(".psm1") } | ForEach-Object { Import-Module $_.FullName -Force -Global }
+
+$TestRegions = @()
+
+if ( $TestByTestName )
+{
+    foreach( $Test in $TestByTestName.Split(","))
+    {
+        $TestRegions += $Test.Split(">>")[$Test.Split(">>").Count - 1]
+    }
+}
+if ( $TestByCategorizedTestName )
+{
+    foreach( $Test in $TestByCategorizedTestName.Split(","))
+    {
+        $TestRegions += $Test.Split(">>")[$Test.Split(">>").Count - 1]
+    }
+}
+if ( $TestByTag )
+{
+    foreach( $Test in $TestByTag.Split(","))
+    {
+        $TestRegions += $Test.Split(">>")[$Test.Split(">>").Count - 1]
+    }
+}
+
+$UniqueTestRegions = $TestRegions | Get-Unique
+LogMsg "Selected test regions:"
+$i = 1
+$CurrentTestRegions = ""
+Set-Content -Value "" -Path .\CurrentTestRegions.azure.env -Force -NoNewline
+$UniqueTestRegions | ForEach-Object { LogMsg "$i. $_"; $i += 1; $CurrentTestRegions += "$_," }
+Set-Content -Value $CurrentTestRegions.TrimEnd(",") -Path .\CurrentTestRegions.azure.env -Force -NoNewline -Verbose