Ignore carddav database errors

roles/webmail/handlers/main.yml

   notify: import sql carddav
 
 - name: import sql carddav
-  action: shell PGPASSWORD='{{ webmail_db_password }}' psql -h localhost -d {{ webmail_db_database }} -U {{ webmail_db_username }} -f /usr/share/roundcube/plugins/carddav/dbinit/postgres.sql --set ON_ERROR_STOP=1
+  action: shell PGPASSWORD='{{ webmail_db_password }}' psql -h localhost -d {{ webmail_db_database }} -U {{ webmail_db_username }} -f /usr/share/roundcube/plugins/carddav/dbinit/postgres.sql