On update/upgrade we should keep current password policy if its already set closes odoo/odoo#137326 X-original-commit: c27257914b47b6fda6d4349f9e553abbbfa53347 Signed-off-by: Xavier Morel (xmo) <xmo@odoo.com> Signed-off-by: Xavier Alt (xal) <xal@odoo.com>