docs: def create_config_file(self, vmdk_location, description):
          """
          Create the aws import config file
          :param vmdk_location: location of downloaded VMDK
          :param description: description to use for config_file creation
          :return: config file descriptor, config file full path
          """
          description = description
          format = "vmdk"
          user_bucket = {
              "S3Bucket": self.bucket_name,
              "S3Key": vmdk_location
          }
          parent_obj = {'Description': description, 'Format': format, 'UserBucket': user_bucket}
          obj_list = [parent_obj]
  
          temp_fd, temp_file = tempfile.mkstemp()
          print 'creating tmp file for {} at {}'.format(vmdk_location, temp_file)
  
          with os.fdopen(temp_fd, 'w') as f:
              json.dump(obj_list, f)
          return temp_fd, temp_file