Rename delivery_time into lead_time

issue5275

tests/scenario_sale_supply_drop_shipment.rst

@@ -134,7 +134,7 @@ Create product::
     >>> product_supplier.product = template
     >>> product_supplier.party = supplier
     >>> product_supplier.drop_shipment = True
-    >>> product_supplier.delivery_time = 0
+    >>> product_supplier.lead_time = datetime.timedelta(0)
     >>> product_supplier.save()
 
 Create payment term::

view/product_supplier_form.xml

@@ -2,7 +2,7 @@
 <!-- This file is part of Tryton.  The COPYRIGHT file at the top level of
 this repository contains the full copyright notices and license terms. -->
 <data>
-    <xpath expr="/form/field[@name='delivery_time']" position="after">
+    <xpath expr="/form/field[@name='lead_time']" position="after">
         <label name="drop_shipment"/>
         <field name="drop_shipment"/>
     </xpath>