Add OpenShift Runner Support

What does this MR do?

This Merge Request adds a dockerfile that can be built to run GitLab-Runner on OpenShift similar to how Kubernetes uses the GitLab Runner. This container should be a drop-in for the existing Kubernetes runner.

Why was this MR needed?

To add OpenShift Support

Are there points in the code the reviewer needs to double check?

Verify CI/CD is built.

Does this MR meet the acceptance criteria?

• [N/A] Documentation created/updated
• [N/A] Added tests for this feature/bug
• In case of conflicts with master - branch was rebased

What are the relevant issue numbers?

Related to &2068