Merge pull request #11741 from edx/ned/flaky-SOL-1654

Mark a flaky test, SOL-1654

common/test/acceptance/tests/lms/test_lms_instructor_dashboard.py

@@ -290,6 +290,7 @@ class ProctoredExamsTest(BaseInstructorDashboardTest):
         # Stop the timed exam.
         self.courseware_page.stop_timed_exam()
 
+    @flaky  # TODO: fix this.  See SOL-1654, SOL-1183, and SOL-1182
     def test_can_add_remove_allowance(self):
         """
         Make sure that allowances can be added and removed.