Kill process default usage

[paigerube14]

Current signal ignores any signals being sent to start_cerberus and doesnt properly end the run

If you want to ignore the signal specified by the first argument (i.e., pretending that the signal never happens), use SIG_IGN for the second argument.

    signal(SIGINT, SIG_IGN)

    signal(SIGALRM, SIG_IGN)

In the above two lines, SIGINT and SIGALRM are ignored.

switching to using: https://python.readthedocs.io/en/latest/library/signal.html#signal.SIG_DFL

[paigerube14]

^CProcess ForkPoolWorker-2:
Process ForkPoolWorker-3:
Process ForkPoolWorker-4:
Process ForkPoolWorker-1:
2023-07-14 16:01:24,799 [INFO] Terminating cerberus monitoring
2023-07-14 16:01:24,801 [INFO] Final status information written to final_cerberus_info.json

[openshift-ci[bot]]

@paigerube14: The following test 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/images	d659d378d9a8a8a1f60af0a080a7f49d95f9dafb	link	true	/test images

Full PR test history. Your PR dashboard.

Instructions for interacting with me using PR comments are available [here](https://git.k8s.io/community/contributors/guide/pull-requests.md). If you have questions or suggestions related to my behavior, please file an issue against the [kubernetes/test-infra](https://github.com/kubernetes/test-infra/issues/new?title=Prow%20issue:) repository. I understand the commands that are listed [here](https://go.k8s.io/bot-commands).

[openshift-ci[bot]]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: chaitanyaenr, paigerube14

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