Add picked step to customer shipment workflow

issue9634
review329071002

tests/scenario_sale.rst

@@ -269,6 +269,7 @@ Validate Shipments::
 
     >>> shipment.click('assign_try')
     True
+    >>> shipment.click('pick')
     >>> shipment.click('pack')
     >>> shipment.click('done')
 
@@ -368,6 +369,7 @@ Ship 3 products::
     >>> stock_inventory_move.quantity = 3.0
     >>> shipment.click('assign_try')
     True
+    >>> shipment.click('pick')
     >>> shipment.click('pack')
     >>> shipment.click('done')
     >>> shipment.state
@@ -508,6 +510,7 @@ Checking Shipments::
     2.0
     >>> mix_shipment.click('assign_try')
     True
+    >>> mix_shipment.click('pick')
     >>> mix_shipment.click('pack')
     >>> mix_shipment.click('done')
     >>> move_shipment, = mix_shipment.outgoing_moves
@@ -569,6 +572,7 @@ Checking Shipments::
     3.0
     >>> mix_shipment.click('assign_try')
     True
+    >>> mix_shipment.click('pick')
     >>> mix_shipment.click('pack')
     >>> move_shipment, = mix_shipment.outgoing_moves
     >>> move_shipment.product.rec_name
@@ -657,6 +661,7 @@ to invoices::
     ...     move.quantity = 5.0
     >>> shipment.click('assign_try')
     True
+    >>> shipment.click('pick')
     >>> shipment.click('pack')
     >>> shipment.click('done')
     >>> sale.reload()