tests for error scenarios

[gabemontero]

See the discussion starting in https://github.com/shipwright-io/operator/pull/14#discussion_r718695602

we currently do not have testing that sorts out that the operator does the right thing if something is amiss with the shipwright build controller deployment

we'll take any combination of unit, integration, or e2e's as a starting point to resolve this, where if need be, follow up issues are opened if further investigation warrants additional tests

among other things, we should see what other OLM controllers like tekton, or even what openshift CVO operators do in their unit tests to validate bad inputs