[FIX] mrp_operations: planned end date in Gantt
[FIX] mrp_operations: planned end date in Gantt

It is necessary to define the date_stop, otherwise the Gantt view is
unusable.

opw-669042

Elico-Corp/odoo_OCB,bplancher/odoo,hip-odoo/odoo,storm-computers/odoo,bplancher/odoo,ygol/odoo,stephen144/odoo,stephen144/odoo,ygol/odoo,ygol/odoo,hip-odoo/odoo,laslabs/odoo,dfang/odoo,microcom/odoo,microcom/odoo,sysadminmatmoz/OCB,sysadminmatmoz/OCB,stephen144/odoo,sysadminmatmoz/OCB,hip-odoo/odoo,storm-computers/odoo,Elico-Corp/odoo_OCB,laslabs/odoo,Elico-Corp/odoo_OCB,Elico-Corp/odoo_OCB,Elico-Corp/odoo_OCB,dfang/odoo,dfang/odoo,ygol/odoo,sysadminmatmoz/OCB,laslabs/odoo,bplancher/odoo,stephen144/odoo,microcom/odoo,hip-odoo/odoo,ygol/odoo,laslabs/odoo,laslabs/odoo,Elico-Corp/odoo_OCB,storm-computers/odoo,microcom/odoo,stephen144/odoo,dfang/odoo,bplancher/odoo,storm-computers/odoo,storm-computers/odoo,microcom/odoo,sysadminmatmoz/OCB,dfang/odoo,sysadminmatmoz/OCB,stephen144/odoo,storm-computers/odoo,bplancher/odoo,sysadminmatmoz/OCB,ygol/odoo,ygol/odoo,laslabs/odoo,hip-odoo/odoo,bplancher/odoo,hip-odoo/odoo,dfang/odoo,microcom/odoo