Creation of production order from a bom with 0 quantity to produce will fail. As there is already a constraint on the quantity to produce on MO, this commit adds the same constraint on BoM. closes odoo/odoo#48485 X-original-commit: 1330500885ae096372ab32fba4ffc9db252dd2d4 Signed-off-by: Simon Lejeune (sle) <sle@openerp.com>