chore: update tests and docs to use bitnamilegacy #2537

Job	Run time
Run Cargo Udeps	1m 54s
Run Rustfmt	13s
Run Cargo Deny (bans licenses sources)	46s
Run Cargo Deny (advisories)	49s
Check if committed Helm charts are up to date	52s
Check if committed README is the one we would render from the available parts	25s
Run RustDoc	1m 21s
Run Clippy	44s
Run Cargo Tests	38s
Decide if Helm charts are pushed to the helm repository based on action trigger	3s
All tests passed	4s
Package Charts, Build Docker Image and publish them - ubuntu-latest	11m 24s
Package Charts, Build Docker Image and publish them - ubicloud-standard-8-arm	9m 56s
Build and publish manifest list	42s
Run the OpenShift Preflight check on the published images	22s
	30m 13s

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