Dogfood our release pipeline

[adambkaplan]

With #363 I have set up a simple release pipeline via Travis. In the long run we will want an image build and release pipeline that dogfoods our own services. I envision a process as follows:

1. Use Travis (or something else) to launch a k8s cluster
2. Install the Shipwright operator off a stable release image. If using OLM/Operator Hub we should get Tekton, too.
3. For PRs - run unit & e2e tests via Tekton tasks. Use Shipwright strategies to do an image build.
4. Merges to master & release tags - run a Shipwright build.