SubnetSpec 'ID' must not be required field

[joeunlog]

/kind feature

Describe the solution you'd like
SubnetSpec 'ID' must not be required field

Anything else you would like to add:
I tested creating aws managed control plane with configuring specific subnet cidr.
When I tested it 21 days ago, it worked fine.
And today, I tested same thing but it require subnet's ID, so test was failed.
I found pull request about this, and realize that subnet id is no longer omitempty.
pull/3748
Subnet id must be required only when using 'Bring Your Own AWS Infrastructure'

Environment:

• Cluster-api-provider-aws version:
• Kubernetes version: (use kubectl version):
• OS (e.g. from /etc/os-release):

[k8s-ci-robot]

@joeunlog: This issue is currently awaiting triage.

If CAPA/CAPI contributors determines this is a relevant issue, they will accept it by applying the triage/accepted label and provide further guidance.

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Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[Ankitasw]

This was introduced as part of new SSA feature, which cannot be changed back. Please refer here.