Add the role-group as a node attribute and document cluster scaling (… #223

Job	Run time
Decide if Helm charts are pushed to the helm repository based on action trigger	4s
Run Rustfmt	18s
Run Cargo Udeps	1m 51s
Check if committed Helm charts are up to date	42s
Run Cargo Deny (advisories)	59s
Run Clippy	29s
Run Cargo Tests	43s
Run Cargo Deny (bans licenses sources)	49s
Run RustDoc	1m 17s
Check if committed README is the one we would render from the available parts	24s
All tests passed	2s
Package Charts, Build Docker Image and publish them - ubicloud-standard-8-arm	9m 19s
Package Charts, Build Docker Image and publish them - ubuntu-latest	11m 26s
Build and publish manifest list	44s
Run the OpenShift Preflight check on the published images	16s
	29m 23s

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