chore: update kustomize manifests to be kustomize v3 compatible

[dfarr]

Description of your changes:

Update kustomize manifests to be kustomize v3 compatible. Included changes:

1. bases -> resources (bases is deprecated)
2. env -> envs in configMapGenerator and secretGenerator

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[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: dfarr
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[k8s-ci-robot]

Hi @dfarr. Thanks for your PR.

I'm waiting for a kubeflow 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.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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[dfarr]

@googlebot I signed it!

[Bobgy]

Hi @dfarr! We haven't decided to drop kubectl apply -k support, so we won't be accepting this PR.
If you want to consume kfp by kustomize v3, you can fix the syntax after pulling the manifest.

For example: https://github.com/kubeflow/manifests/blob/4e004e50fa6221f78292a7298dc0507ec6af829c/hack/pull_kfp_upstream.sh#L22-L27

[dfarr]

Got it thanks, hopefully the version of kustomize shipped with kubectl is updated soon. This seems to be the PR tracking that progress.

[Bobgy]

Thanks, I'd hope so too