title: Using SoftLayer Python API placeOrder to add disks to vm
body: <p>I've created a softlayer VM using a custom image template.  I am able to add SAN disks to my vm using curl but I'm unsuccessful trying to do this with the Python SoftLayer library.  I receive the following error:</p>
  
  <pre><code>SoftLayer.exceptions.SoftLayerAPIError: SoftLayerAPIError(SoftLayer_Exception_Order_InvalidContainer): Invalid container specified: SoftLayer_Container_Product_Order. Ordering a server or service requires a specific container type, not the generic base order container.
  </code></pre>
  
  <p>Here is my code:</p>
  
  <pre><code>self.client = SoftLayer.Client(username='myusername@email.com', api_key='key')
  console_id = 11111111
  
  order = {
          "parameters": [{
              "virtualGuests": [{"id": console_id}],
              "prices": [{
                  "id": 113031,
                  "categories": [{
                      "categoryCode": "guest_disk1",
                      "complexType": "SoftLayer_Product_Item_Category"
                  }],
                  "complexType": "SoftLayer_Product_Item_Price"
              },
                  {
                      "id": 112707,
                      "categories": [{
                          "categoryCode": "guest_disk2",
                          "complexType": "SoftLayer_Product_Item_Category"
                      }],
                      "complexType": "SoftLayer_Product_Item_Price"
                  }
              ],
              "properties": [
                  {"name": "NOTE_GENERAL", "value": "adding disks"},
                  {"name": "MAINTENANCE_WINDOW", "value": "now"}
              ],
              "complexType": "SoftLayer_Container_Product_Order_Virtual_Guest_Upgrade"
          }]
      }
  
  # response = self.client['Product_Order'].placeOrder(order, False)        
  response = self.client.call('Product_Order', 'placeOrder', order)
  
  print response
  </code></pre>
  
  <p>If I run the following curl command however my vm updates are successful:</p>
  
  <pre><code>curl -X POST --data @updatefile https://myusername%40email%2Ecom:apikey@api.softlayer.com/rest/v3.1/SoftLayer_Product_Order/placeOrder
  </code></pre>
  
  <p>Contents of updatefile:</p>
  
  <pre><code>{
  "parameters": [{
      "virtualGuests":[{"id":11111111}],
      "prices": [{
          "id": 113031,
          "categories": [{
              "categoryCode": "guest_disk1",
              "complexType": "SoftLayer_Product_Item_Category"
          }],
          "complexType": "SoftLayer_Product_Item_Price"
      },
  
      {
          "id": 112707,
          "categories": [{
              "categoryCode": "guest_disk2",
              "complexType": "SoftLayer_Product_Item_Category"
          }],
          "complexType": "SoftLayer_Product_Item_Price"
      }
      ],
      "properties": [
      {"name": "NOTE_GENERAL","value": "adding disks"},
      {"name": "MAINTENANCE_WINDOW","value": "now"}
      ],
      "complexType": "SoftLayer_Container_Product_Order_Virtual_Guest_Upgrade"
  }]
  }
  </code></pre>
  
  <p>Any idea what I'm doing wrong?</p>