adapt tests to new required pricelist

This is needed here because the dependency on
purchase_requisition_multicurrency (that introduces the required field)
has just been introduced.

Author: lepistone

purchase_requisition_auto_rfq_bid_selection/test/purchase_requisition.yml

@@ -15,6 +15,7 @@
  !record {model: purchase.requisition, id: requisition1}:
    name: PR01
    bid_tendering_mode: open
+   pricelist_id: purchase.list0
    line_ids:
     - product_id: purchase_requisition_auto_rfq.kitchenset
       product_qty: 10

purchase_requisition_bid_selection/test/process/restricted.yml

@@ -8,6 +8,7 @@
     bid_tendering_mode: 'restricted'
     schedule_date: '2013-09-30'
     req_validity: '2013-09-10'
+    pricelist_id: purchase.list0
     line_ids:
       - product_id: product.product_product_15
         product_qty: 15.0

purchase_requisition_bid_selection/tests/test_generate_po.py

@@ -40,7 +40,8 @@ def setUp(self):
                 'purchase_requisition_bid_selection.act_closed').id,
             'condition': True,
         })
-        self.preq = PReq.create({'state': 'closed'})
+        self.preq = PReq.create({'state': 'closed',
+                                 'pricelist_id': self.ref('purchase.list0')})
         dummy_wkf_trans.unlink()
 
         partner_12 = self.env.ref('base.res_partner_12')