feat(regionserver): add graceful shutdown configuration #1944

Job	Run time
Check if committed README is the one we would render from the available parts	22s
Check if committed README is the one we would render from the available parts	19s
Run Cargo Deny (advisories)	1m 15s
Run Cargo Deny (advisories)	40s
Check if committed Helm charts are up to date	2s
Check if committed Helm charts are up to date	2s
Run Cargo Deny (bans licenses sources)	1m 8s
Run Cargo Deny (bans licenses sources)	44s
Run RustDoc	2s
Run RustDoc	4s
Run Clippy	2s
Run Clippy	1s
Run Rustfmt	11s
Run Rustfmt	13s
Run Cargo Tests	2s
Run Cargo Tests	3s
Run Cargo Udeps	2s
Run Cargo Udeps	4s
Select target helm repository based on action trigger	1s
Select target helm repository based on action trigger	1s
All tests passed	0s
All tests passed	0s
Package Charts, Build Docker Image and publish them - ${{ matrix.runner }}	0s
Package Charts, Build Docker Image and publish them - ${{ matrix.runner }}	0s
Build and publish manifest list	0s
Build and publish manifest list	0s
Run the OpenShift Preflight check on the published images	0s
Run the OpenShift Preflight check on the published images	0s
	5m 18s

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