Introduce automation to the hub api

[dprotaso]

Surfacing tektoncd/hub#188 here since it looks like it still not being updated automatically

[vdemeester]

Note that we should try to setup these automation on all the project 🙃

[afrittoli]

Pipeline, triggers and dashboard and deployed nightly automatically to robocat.
They are installed on-demand to dogfooding, but their deployment is fully automated.
For hub and results we need to automated the deployment, set-up nightly builds and bring them up to speed with the rest :)

[tekton-robot]

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/lifecycle stale

Send feedback to tektoncd/plumbing.

[dprotaso]

/lifecycle frozen