Merge pull request #6906 from edx/cdodge/set-is-entrance-exam-default

set default on is_entrance_exam

common/lib/xmodule/xmodule/seq_module.py

@@ -44,6 +44,7 @@ class SequenceFields(object):
             "Tag this course module as an Entrance Exam. "
             "Note, you must enable Entrance Exams for this course setting to take effect."
         ),
+        default=False,
         scope=Scope.content,
     )