Prow cert is expired?

[bobcatfish]

Expected Behavior

https should work for prow.tekton.dev

Actual Behavior

As pointed out by @chmouel when you visit prow.tekton.dev (e.g. https://prow.tekton.dev/log?job=pull-tekton-pipeline-unit-tests&id=1204443482555420674 to look at the raw build log for tektoncd/pipeline#1702) you see an error like this:

Additional Info

Everything we know about how the certs work is written at https://github.com/tektoncd/plumbing/tree/master/prow#ingress - also @dlorenc will know more if he wants to jump in here :D

p.s. as a follow up to fixing this immediate issue we should open an issue to proactively prevent this in the future (unless we feel its not worth the effort)

[vdemeester]

/kind bug

This is fixed now, see #152
/close

[tekton-robot]

@vdemeester: Closing this issue.

In response to this:

/kind bug

This is fixed now, see #152
/close

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