Make Tekton Prow jobs invoke Tekton Pipelines

[bobcatfish]

Expected Behavior

The CI/CD used by Tekton Pipelines (triggered via prow jobs) should be able to invoke Pipelines.

In the long run we want Pipeline support in Prow (#537), but in the meantime, we can make the existing Prow jobs:

• Deploy Tekton Pipelines (to the Prow cluster itself? not sure, will need input)
• Create a PipelineRun from a template

For this issue, we can create just a "Hello world" type PipelineRun, to prove it works.

Actual Behavior

The CI/CD used by Tekton Pipelines (triggered via prow jobs) invokes scripts only.

Additional Info

This is the short term solution, the long term solution is #537. If we can go straight to that, even better!

[abayer]

Is @rawlingsj's Prow work close enough to ready to be feasible here in the near term?

[rawlingsj]

We have a pipeline controller that seems to be working great https://github.com/jenkins-x/test-infra/blob/238d673/prow/cmd/pipeline/controller.go - main issue ATM it's slightly tied to Jenkins X as we have it optionally calling out to the 'pipelinerunner' service. I did want to take what I've done and apply a non Jenkins X related PR to the test-infra repo but not been able to yet unfortunately.

[dlorenc]

I don't think this is still relevant. Prow can call Tekton tasks already. Closing for now.

[bobcatfish]

I'm gonna assign this to @rawlingsj for posterity :D thanks for this @rawlingsj !!! 🎉 ❤️

[bobcatfish]

#537