fix: consistency of usecase files

[lechnerc77]

Purpose

Fix of inconsistencies of usecase files

• Non-existing service names
• wrong vcpu setting for HANA Cloud
• Inconsistent IP whitelisting for HANA Cloud
• Inconsistent service key creation for XSUAA

Does the PR solve an issue

[ ] Yes - Please add issue number
[X] No

Does this introduce a breaking change?

[ ] Yes
[X] No

Pull Request Type

What kind of change does this Pull Request introduce?

[X] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Documentation content changes
[ ] Other... Please describe:

How to Test

Apply sample use cases

What to Check

Verify that the following are valid

• use cases get executed properly and infrastructure is set up as defined

Other Information

n/a