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- ~~[OWNERS](https://github.com/kubeflow/katib/blob/master/OWNERS)~~ [andreyvelich]
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What this PR does / why we need it: caBundle hasn't been a required key since k8s v1.13 Removing it makes it simpler to deploy katib with terraform.
Which issue(s) this PR fixes: Fixes #2367
Checklist: