Bug 1527674 - [marionette] Always quit the browser for tests in test_profile_management.py. r=webdriver-reviewers,jdescottes

Differential Revision: https://phabricator.services.mozilla.com/D118322

testing/marionette/harness/marionette_harness/tests/unit/test_profile_management.py

@@ -24,9 +24,10 @@ class BaseProfileManagement(MarionetteTestCase):
 
     def tearDown(self):
         shutil.rmtree(self.orig_profile_path, ignore_errors=True)
-
         self.marionette.profile = None
 
+        self.marionette.quit(clean=True)
+
         super(BaseProfileManagement, self).tearDown()
 
     @property