swh.journal.tests: Fix missing new attribute on mock journal client
This fixes the current ci build failure [1]
Related to !100 (closed)
Test Plan
tox
Migrated from D2734 (view on Phabricator)
Staging instance, all changes can be removed at any time
This fixes the current ci build failure [1]
Related to !100 (closed)
tox
Migrated from D2734 (view on Phabricator)