add dnsconfig to controller

[DrFaust92]

Signed-off-by: drfaust92 [email protected]

What does this PR do?

• Fixes #

If you modified files in the ./charts/jenkins/ directory, please also include the following:

### Submitter checklist
- [x] I bumped the "version" key in `./charts/jenkins/Chart.yaml`.
- [x] I added a new changelog entry to `./charts/jenkins/CHANGELOG.md`.
- [x] I followed the [technical requirements](https://github.com/jenkinsci/helm-charts/blob/main/CONTRIBUTING.md#technical-requirements).
- [x] I ran `.github/helm-docs.sh` from the project root.

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