docs: Document how to configure user-info-fetcher Keycloak user #2007

Job	Run time
Run RustDoc	1m 31s
Run Cargo Udeps	2m 14s
Run Rustfmt	19s
Run Cargo Deny (advisories)	28s
Decide if Helm charts are pushed to the helm repository based on action trigger	2s
Run Clippy	41s
Run Cargo Deny (bans licenses sources)	29s
Check if committed README is the one we would render from the available parts	24s
Check if committed Helm charts are up to date	40s
Run Cargo Tests	43s
All tests passed	3s
Package Charts, Build Docker Image and publish them - ubicloud-standard-8-arm	11m 9s
Package Charts, Build Docker Image and publish them - ubuntu-latest	12m 45s
Build and publish manifest list	41s
Run the OpenShift Preflight check on the published images	18s
	32m 27s

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