chore: update tests and docs to use bitnamilegacy #2049

Job	Run time
Run Clippy	36s
Run RustDoc	1m 20s
Run Cargo Udeps	1m 53s
Run Cargo Deny (bans licenses sources)	42s
Decide if Helm charts are pushed to the helm repository based on action trigger	3s
Run Cargo Deny (advisories)	43s
Run Rustfmt	18s
Check if committed README is the one we would render from the available parts	26s
Run Cargo Tests	37s
Check if committed Helm charts are up to date	50s
All tests passed	3s
Package Charts, Build Docker Image and publish them - ubuntu-latest	12m 10s
Package Charts, Build Docker Image and publish them - ubicloud-standard-8-arm	9m 23s
Build and publish manifest list	48s
Run the OpenShift Preflight check on the published images	19s
	30m 11s

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