User Story:

We should be able to provide a minimal manifest template for infra, machines and CNI (calico) for the users to install an IPv6-enabled cluster. This will also be useful for e2e testing.

We should also create a documentation page for enabling IPv6 with CAPA.

Acceptance Criteria:

Description of criteria:

• Manifest templates for infrastructure (cluster, awscluster,addons), kubeadmcontrolplane, and (worker) machines.
• A documentation about enabling IPv6 in https://cluster-api-aws.sigs.k8s.io/introduction 

(optional) Out of Scope:

Detail about what is specifically not being delivered in the story

Engineering Details:

• (optional) https://github/com/link.to.enhancement/
• (optional) https://issues.redhat.com/link.to.spike
• Engineering detail 1
• Engineering detail 2

This requires/does not require a design proposal.
This requires/does not require a feature gate.