code: func (agent *ecsAgent) constructVPCSubnetAttributes() []*ecs.Attribute {
  	return []*ecs.Attribute{
  		{
  			Name:  aws.String(vpcIDAttributeName),
  			Value: aws.String(agent.vpc),
  		},
  		{
  			Name:  aws.String(subnetIDAttributeName),
  			Value: aws.String(agent.subnet),
  		},
  	}
  }
docs: // constructVPCSubnetAttributes returns vpc and subnet IDs of the instance as
  // an attribute list