Jenkins home pvc and jenkins controller ingress dry unittest

[Asif-git03]

What does this PR do?

Unit test for DRY support

--> This PR is raised in reference to the earlier PR (#1250)

• Fixes #

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

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

Special notes for your reviewer

[timja]

can you resolve conflicts please?