Add contains_content_type_gated_content attribute to display items in the Sequence Metadata API. This attribute is used to display the content type gating paywall in frontend-app-learning.

Also, refactor existing timed exam code that checks for content_type_gated_content in a sequence to make it try with the new code
AA-613

lms/djangoapps/courseware/tests/test_views.py

@@ -269,8 +269,8 @@ class IndexQueryTestCase(ModuleStoreTestCase):
     NUM_PROBLEMS = 20
 
     @ddt.data(
-        (ModuleStoreEnum.Type.mongo, 10, 171),
-        (ModuleStoreEnum.Type.split, 4, 167),
+        (ModuleStoreEnum.Type.mongo, 10, 174),
+        (ModuleStoreEnum.Type.split, 4, 170),
     )
     @ddt.unpack
     def test_index_query_counts(self, store_type, expected_mongo_query_count, expected_mysql_query_count):

lms/templates/seq_module.html

@@ -21,7 +21,7 @@
     </div>
   % endif
   % endif
-  % if not gated_sequence_fragment:
+  % if not gated_sequence_paywall:
   <div class="sequence-nav">
     <button class="sequence-nav-button button-previous">
       <span class="icon fa fa-chevron-prev" aria-hidden="true"></span>
@@ -103,11 +103,11 @@
   % if not exclude_units:
   % if gated_content['gated']:
     <%include file="_gated_content.html" args="prereq_url=gated_content['prereq_url'], prereq_section_name=gated_content['prereq_section_name'], gated_section_name=gated_content['gated_section_name']"/>
-  % elif gated_sequence_fragment:
+  % elif gated_sequence_paywall:
     <h2 class="hd hd-2 unit-title">
         ${sequence_name}<span class="sr">${_("Content Locked")}</span>
     </h2>
-    ${gated_sequence_fragment | n, decode.utf8}
+    ${gated_sequence_paywall | n, decode.utf8}
   % else:
   <div class="sr-is-focusable" tabindex="-1"></div>