Process Termination on Pipeline Shutdown

Is your feature request related to a problem? Please describe.
At present we are testing data-prepper in a k8s environment, for a new piece of work we are looking at.

The current issue we are having is a heap issue (I will raise another issue for this), that when we run out of heap space all our pipelines shutdown , which is fine. However we would like the option that once the pipelines have shutdown the data-prepper process is terminated, which is not happening at present, which means our pods continue to run although they process nothing.

Describe the solution you'd like
On pipeline shutdown for the option to kill the process, and in turn for the pod to be restarted

Describe alternatives you've considered (Optional)
We will investigate health check's but this is a belt and braces type thing

Additional context
This would be an extension to this PR (I think) https://github.com/opensearch-project/data-prepper/pull/2540/files

Review the pipeline-shutdown changes in PR 2540 and trace how shutdown currently affects the Data Prepper process and Kubernetes pod lifecycle. Define how an opt-in process-termination behavior should be configured and verify that, when enabled, shutting down the pipelines causes the process to exit so the pod can restart.