Skip the BasicAuth test asserting auth in URL

This test is not passing for Selenium2Driver, and other basic auth tests
are already skipped.

Author: stof

tests/Selenium2Config.php

@@ -3,6 +3,7 @@
 namespace Behat\Mink\Tests\Driver;
 
 use Behat\Mink\Driver\Selenium2Driver;
+use Behat\Mink\Tests\Driver\Basic\BasicAuthTest;
 
 class Selenium2Config extends AbstractConfig
 {
@@ -42,6 +43,10 @@ public function skipMessage($testCase, $test)
             return 'Maximizing the window does not work when running the browser in Xvfb.';
         }
 
+        if (BasicAuthTest::class === $testCase && 'testBasicAuthInUrl' === $test) {
+            return 'Basic auth setup is not supported.';
+        }
+
         return parent::skipMessage($testCase, $test);
     }