[FIX] purchase: select supplier
[FIX] purchase: select supplier

Complement of previous commit, allows to retrieve procurement in the
method as well.

ygol/odoo,hip-odoo/odoo,ygol/odoo,hip-odoo/odoo,hip-odoo/odoo,ygol/odoo,ygol/odoo,hip-odoo/odoo,ygol/odoo,ygol/odoo,hip-odoo/odoo,ygol/odoo,hip-odoo/odoo