Add the role-group as a node attribute and document cluster scaling #204

Job	Run time
Run Cargo Udeps	1m 56s
Run Rustfmt	15s
Decide if Helm charts are pushed to the helm repository based on action trigger	3s
Check if committed Helm charts are up to date	37s
Run Cargo Deny (advisories)	50s
Run Cargo Deny (bans licenses sources)	43s
Run Cargo Tests	30s
Check if committed README is the one we would render from the available parts	25s
Run Clippy	37s
Run RustDoc	1m 15s
All tests passed	3s
Package Charts, Build Docker Image and publish them - ubuntu-latest	11m 36s
Package Charts, Build Docker Image and publish them - ubicloud-standard-8-arm	9m 14s
Build and publish manifest list	51s
Run the OpenShift Preflight check on the published images	19s
	29m 14s

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