ci: Tweak the integration test configuration #2691

Job	Run time
Run RustDoc	1m 19s
Check if committed README is the one we would render from the available parts	26s
Run Cargo Udeps	1m 52s
Run Cargo Deny (bans licenses sources)	46s
Run Cargo Deny (advisories)	54s
Decide if Helm charts are pushed to the helm repository based on action trigger	3s
Run Clippy	32s
Run Rustfmt	15s
Run Cargo Tests	33s
Check if committed Helm charts are up to date	52s
All tests passed	4s
Package Charts, Build Docker Image and publish them - ubicloud-standard-8-arm	10m 4s
Package Charts, Build Docker Image and publish them - ubuntu-latest	11m 35s
Build and publish manifest list	46s
Run the OpenShift Preflight check on the published images	15s
	30m 16s

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