Query: ecs_clusters_for_ec2_instance

select
  distinct cluster.cluster_arn as cluster_arn
from
  aws_ec2_instance as i,
  aws_ecs_container_instance as ci,
  aws_ecs_cluster as cluster
where
  ci.ec2_instance_id = i.instance_id
  and ci.cluster_arn = cluster.cluster_arn
  and i.arn = $1;