Background

In CAPI, the AWS provider supports the user supplying the name of a pre-existing placement group. Which will then be used to create the instances.

https://github.com/kubernetes-sigs/cluster-api-provider-aws/pull/4273

We need to add the same field to our API and then pass the information through in the same way, to allow users to leverage placement groups.

Steps

• Review the upstream code linked above
• Backport the feature
• Drop old code for placement group controller that is currently disabled

Stakeholders

• Cluster Infra

Definition of Done

• Users may provide a pre-existing placement group name and have their instances created within that placement group

• Docs

• <Add docs requirements for this card>

• Testing

• <Explain testing that will be added>