commit c734b8c1fb9224fb8ac6d1afd916bda78312139d
Author: Takashi Natsume <takanattie@gmail.com>
Date:   Fri Aug 28 18:22:13 2020 +0900

    Make 'Feature Liaison' optional in test
    
    The 'Feature Liaison' subsection has been optional
    since I3769eb16fe396404113eba75a64d86e6b3d86f81.
    
    Make the subsection optional as well in a test
    ( tests/test_titles.py ).
    
    Change-Id: Ie47ba2e9c77ec849992308a97d39590ffd618afc
    Signed-off-by: Takashi Natsume <takanattie@gmail.com>

diff --git a/tests/test_titles.py b/tests/test_titles.py
index 35541c9..456fc77 100644
--- a/tests/test_titles.py
+++ b/tests/test_titles.py
@@ -23,8 +23,7 @@ import testtools
 # - "History" introduced in Liberty should be
 # mandatory for M.
 OPTIONAL_SECTIONS = ("History",)
-OPTIONAL_SUBSECTIONS = collections.defaultdict(lambda: ())
-OPTIONAL_SUBSECTIONS['backlog'] = ('Upgrade impact',)
+OPTIONAL_SUBSECTIONS = collections.defaultdict(lambda: ('Feature Liaison',))
 OPTIONAL_SUBSECTIONS['queens'] = ('Upgrade impact',)