Fix: don't use corev1.objectReference

[capri-xiyue]

fix #1149

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[k8s-ci-robot]

Hi @capri-xiyue. Thanks for your PR.

I'm waiting for a kubernetes-sigs member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[kfswain]

/ok-to-test

[capri-xiyue]

/assign @robscott

[robscott]

Thanks @capri-xiyue!

/lgtm

[kfswain]

Couple of nonblocking questions:

• Do we want to move this whole struct to the shared_types file?
• if we are naming this ParentGatewayReference should we just hardcode Kind? It seems like using anythign else may be confusing

[kfswain]

/lgtm
/approve

Left a couple of questions that can be resolved outside of this PR. Thanks!

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: capri-xiyue, kfswain

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