Update to latest gophercloud

Change-Id: I0145b899576f76e7116152fee978bc04b05080f8

Author: dims

Godeps/Godeps.json

@@ -256,15 +256,15 @@ func (volumes *VolumesV1) deleteVolume(volumeID string) error {
 
 func (volumes *VolumesV2) deleteVolume(volumeID string) error {
 	startTime := time.Now()
-	err := volumes_v2.Delete(volumes.blockstorage, volumeID).ExtractErr()
+	err := volumes_v2.Delete(volumes.blockstorage, volumeID, nil).ExtractErr()
 	timeTaken := time.Since(startTime).Seconds()
 	recordOpenstackOperationMetric("delete_v2_volume", timeTaken, err)
 	return err
 }
 
 func (volumes *VolumesV3) deleteVolume(volumeID string) error {
 	startTime := time.Now()
-	err := volumes_v3.Delete(volumes.blockstorage, volumeID).ExtractErr()
+	err := volumes_v3.Delete(volumes.blockstorage, volumeID, nil).ExtractErr()
 	timeTaken := time.Since(startTime).Seconds()
 	recordOpenstackOperationMetric("delete_v3_volume", timeTaken, err)
 	return err