[FIX] sale: Making a downpayment with a fiscal position
[FIX] sale: Making a downpayment with a fiscal position

When creating a SO line and an invoice line for a downpayment,
the fiscal position set on the SO must be taken into account
to map the right taxes.

opw:688611

ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo