Automated cherry pick of #263: fix: change occasional usage of kebab case to snake case

[Jeffwan]

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[k8s-ci-robot]

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[aws-kf-ci-bot]

@Jeffwan: The following test failed, say /retest to rerun all failed tests:

Test name	Commit	Details	Rerun command
kubeflow-kfctl-presubmit	cfe7b20	link	/test kubeflow-kfctl-presubmit

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