Switch all examples, demos and integration tests to use the rego rules wrapper for UIF

[sbernauer]

Part of stackabletech/issues#499

Remove regorule http calls and replace them with the regorules from #580

### Tasks
- [x] opa-operator - already updated
- [x] hdfs-operator - uif not used
- [ ] https://github.com/stackabletech/trino-operator/pull/635
- [ ] https://github.com/stackabletech/demos/pull/91

[sbernauer]

All usages should be updated :)