**What this PR does / why we need it**:
Expose server configuration to be configurable with Helm values

**Checklist**
- [x] Documentation added
- [ ] Tests updated
- [ ] Is this an important fix or new feature? Add an entry in the
`CHANGELOG.md`.
- [ ] Changes that require user attention or interaction to upgrade are
documented in `docs/sources/upgrading/_index.md`

Co-authored-by: Karsten Jeschkies <[email protected]>