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Hello! I have a slightly niche problem. I'm using `awsx` to deploy EC2-backed ECS services (_not_ Fargate_)_ and having trouble setting them up with proper capacity providers. They have an ASG (via `cluster.createAutoScalingGroup(...)`) but by default the group doesn't scale for new deploys.  I thought the answer might be to create an explicit `aws.ecs.CapacityProvider` which will respond to task placement failures by provisioning new instances, but there seems to be a circular dependency between the different elements like so:

• `awsx.ecs.Cluster` takes a `capacityProviders` array on creation, but
• `aws.ecs.CapacityProvider` needs the ARN of an `autoscalingGroup`, but
• the `autoscalingGroup` is created via `cluster.createAutoScalingGroup(...)` which is not available until after the cluster is created. 
I hope that's enough context! I can provide more code if that would be useful. Basically where I want to get to is an ASG with `n` instances in, where every time a `pulumi up` happens the group scales up to `2n` instances to place new tasks, then scales back down to `n` instances, getting rid of the old ones. Right now `pulumi up` completes successfully but new tasks don't happen unless I specify the ASG should be permanently twice as big as it needs to be.