implement a not-so-blocking defrag

[tjungblu]

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[openshift-ci]

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[openshift-ci]

@tjungblu: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/unit	b05b095	link	true	/test unit
ci/prow/e2e-aws-ovn	b05b095	link	true	/test e2e-aws-ovn
ci/prow/configmap-scale	b05b095	link	true	/test configmap-scale

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