[release-5.1] LOG-1273: Fix cronjob exit code handler for combined delete and rollover exec

[openshift-cherrypick-robot]

This is an automated cherry-pick of #744

/assign periklis

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[openshift-ci]

@openshift-cherrypick-robot: The following tests failed, say /retest to rerun all failed tests:

Test name	Commit	Details	Rerun command
ci/prow/unit	90f9334	link	/test unit
ci/prow/cluster-logging-operator-e2e	90f9334	link	/test cluster-logging-operator-e2e
ci/prow/e2e-upgrade	90f9334	link	/test e2e-upgrade
ci/prow/images	90f9334	link	/test images
ci/prow/e2e-operator	90f9334	link	/test e2e-operator

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[periklis]

/close in favor of #746

[periklis]

/close

[openshift-ci]

@periklis: Closed this PR.

In response to this:

/close

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