Since odoo/odoo#122569, we now try to import the `migrations` sub-package of each module to find upgrade tests. However, this badly written regex match the OCA module `base_maintenance`, which generate a RecursionError. closes odoo/odoo#136549 X-original-commit: abd9e6686bdb1f84d67bd536d9cecda627cd001a Signed-off-by: Christophe Simonis (chs) <chs@odoo.com>