chore: allows use of tekton pipelineRef.Resolver

[JordanGoasdoue]

allows us to use the native tekton pipelineRef git resolver

  pipelineRef:
    resolver: git
    params:
      - name: repo
        value: xxx
      - name: revision
        value: main
      - name: pathInRepo
        value: /path/to/pipeline.yaml

in such case, our pipelineRef.name is empty, but it's not an error

[jenkins-x-bot]

Hi @JordanGoasdoue. Thanks for your PR.

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[jenkins-x-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: tomhobson

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[msvticket]

/ok-to-test