
backport: stein If I deploy monasca by setting enable_monasca to true, the monasca_notification restarts with the following error: ERROR:__main__:MissingRequiredSource: /var/lib/kolla/config_files/notification_templates/* file is not found These templates are optional, so we need to mark this directory as optional in config.json. Change-Id: Ia2dd835daa7ab1153617cc92f17c2d8d498c73e0 Closes-Bug: #1823726