Add integration tests for win_user module.

test/integration/roles/test_win_user/files/lockout_user.ps1

@@ -0,0 +1,17 @@
+trap
+{
+    Write-Error -ErrorRecord $_
+    exit 1;
+}
+
+$username = $args[0]
+[void][system.reflection.assembly]::LoadWithPartialName('System.DirectoryServices.AccountManagement')
+$pc = New-Object -TypeName System.DirectoryServices.AccountManagement.PrincipalContext 'Machine', $env:COMPUTERNAME
+For ($i = 1; $i -le 10; $i++) {
+    try {
+        $pc.ValidateCredentials($username, 'b@DP@ssw0rd')
+    }
+    catch {
+        break
+    }
+}