[FIX] purchase: default uom for purchase
[FIX] purchase: default uom for purchase

The methods _get_po_line_values_from_procs didn't take into account the uom_po_id
to compute the price_unit of a purchase order line.

opw:644356

laslabs/odoo,microcom/odoo,syci/OCB,tvtsoft/odoo8,laslabs/odoo,Elico-Corp/odoo_OCB,sysadminmatmoz/OCB,mkieszek/odoo,dfang/odoo,microcom/odoo,stephen144/odoo,storm-computers/odoo,ygol/odoo,optima-ict/odoo,sysadminmatmoz/OCB,sysadminmatmoz/OCB,syci/OCB,ygol/odoo,mkieszek/odoo,tvtsoft/odoo8,dfang/odoo,ygol/odoo,mkieszek/odoo,stephen144/odoo,stephen144/odoo,hip-odoo/odoo,hip-odoo/odoo,hip-odoo/odoo,ygol/odoo,stephen144/odoo,bplancher/odoo,dfang/odoo,laslabs/odoo,sysadminmatmoz/OCB,storm-computers/odoo,tvtsoft/odoo8,sysadminmatmoz/OCB,Elico-Corp/odoo_OCB,storm-computers/odoo,bplancher/odoo,ygol/odoo,syci/OCB,optima-ict/odoo,stephen144/odoo,Elico-Corp/odoo_OCB,ygol/odoo,tvtsoft/odoo8,microcom/odoo,laslabs/odoo,bplancher/odoo,dfang/odoo,bplancher/odoo,tvtsoft/odoo8,laslabs/odoo,laslabs/odoo,optima-ict/odoo,bplancher/odoo,mkieszek/odoo,optima-ict/odoo,syci/OCB,mkieszek/odoo,microcom/odoo,ygol/odoo,hip-odoo/odoo,syci/OCB,tvtsoft/odoo8,microcom/odoo,microcom/odoo,syci/OCB,sysadminmatmoz/OCB,storm-computers/odoo,dfang/odoo,optima-ict/odoo,stephen144/odoo,Elico-Corp/odoo_OCB,mkieszek/odoo,bplancher/odoo,storm-computers/odoo,dfang/odoo,hip-odoo/odoo,Elico-Corp/odoo_OCB,optima-ict/odoo,Elico-Corp/odoo_OCB,sysadminmatmoz/OCB,hip-odoo/odoo,storm-computers/odoo