docs: document mTLS configuration for NiFi 2.x monitoring #2449

Job	Run time
Run RustDoc	1m 26s
Decide if Helm charts are pushed to the helm repository based on action trigger	5s
Check if committed README is the one we would render from the available parts	24s
Run Rustfmt	14s
Run Cargo Deny (bans licenses sources)	49s
Run Cargo Udeps	1m 58s
Check if committed Helm charts are up to date	41s
Run Cargo Deny (advisories)	48s
Run Clippy	29s
Run Cargo Tests	43s
All tests passed	5s
Package Charts, Build Docker Image and publish them - ubicloud-standard-8-arm	9m 42s
Package Charts, Build Docker Image and publish them - ubuntu-latest	14m 11s
Build and publish manifest list	41s
Run the OpenShift Preflight check on the published images	31s
	32m 47s

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