[hooks/security] provide attribute "add" permission As of today, the update permission on attributes is checked at entity *creation* time. This forbids using update permissions the proper way. We set it to be checked at entity update time only. We introduce a specific 'add' permission rule for attributes. For backward compatibility, its default value will be the same as the current 'update' permission. Notes: * needs a new yams version (ticket #149216) * introduces two new 'add_permissions' rdefs (attribute - group|rqlexpr) * if the update permission was () and the bw compat kicks in, the rule is not enforced, to avoid un-creatable entity types -- this restriction will be lifted when the bw compat is gone * small internal refactoring on check_entity_attributes * one small pre 3.6.1 bw compat snippet must be removed from schemaserial Closes #2965518.

for eschema in schema.entities():
    if not (eschema.final or 'cw_source' in eschema.subjrels):
        add_relation_definition(eschema.type, 'cw_source', 'CWSource', ask_confirm=False)

sql('INSERT INTO cw_source_relation(eid_from, eid_to) '
    'SELECT e.eid,s.cw_eid FROM entities as e, cw_CWSource as s '
    'WHERE s.cw_name=e.source AND NOT EXISTS(SELECT 1 FROM cw_source_relation WHERE eid_from=e.eid AND eid_to=s.cw_eid)')
commit()