[migration/3.18] Add add_permission relation definitions earlier
Otherwise sync_schema_props_perms('defaultval') does not work because the
later relation is not in schema.
# -*- coding: utf-8 -*-
# copyright %(year)s %(author)s, all rights reserved.
# contact %(author-web-site)s -- mailto:%(author-email)s
#
%(long-license)s
"""%(distname)s specific hooks and operations"""