Determine if ec2:ReleaseAddress is required for NodePool policy

`ec2:ReleaseAddress` is documented as a required permission for the NodePool management policy: https://github.com/openshift/hypershift/blob/main/api/v1beta1/hostedcluster_types.go#L1285

This is too permissive and the permission will at least need a condition to scope it. However, it may not be used by the NodePool controller at all. In that case, this permission should be removed.

Done Criteria:

• Determine if ec2:ReleaseAddress is required for NodePool management in Hypershift
• If not required, remove the permission from documentation