Update openshift-client.yaml with optional results field

[Shrubberer]

Added a results field with an optional RESULT to emit output for use in pipeline or next tasks. The default value is set to an empty string according to TEP-0048: Task Results without Results.

Changes

Submitter Checklist

These are the criteria that every PR should meet, please check them off as you review them:

• [x] Follows the authoring recommendations
• [x] Includes docs (if user facing)
• [x] Includes tests (for new tasks or changed functionality)
  • See the end-to-end testing documentation for guidance and CI details.
• [x] Meets the Tekton contributor standards (including functionality, content, code)
• [x] Commit messages follow commit message best practices
• [x] Has a kind label. You can add one by adding a comment on this PR that contains /kind <type>. Valid types are bug, cleanup, design, documentation, feature, flake, misc, question, tep
• [ ] Complies with Catalog Organization TEP, see example. Note An issue has been filed to automate this validation

  • [x] File path follows <kind>/<name>/<version>/name.yaml

  • [x] Has README.md at <kind>/<name>/<version>/README.md

  • [x] Has mandatory metadata.labels - app.kubernetes.io/version the same as the <version> of the resource

  • [x] Has mandatory metadata.annotations tekton.dev/pipelines.minVersion

  • [x] mandatory spec.description follows the convention

      ```
    
      spec:
        description: >-
          one line summary of the resource
    
          Paragraph(s) to describe the resource.
      ```
    

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