Per the API spec, we should surface a condition like this when the Deployment underlying the Revision cannot be created (e.g. due to quota problems).

  conditions:
  - type: Ready
    status: False
    reason: NoDeployment
    message: "The controller could not create a deployment named ela-abc-e13ac."

This is somewhat contingent on the types of information the Deployment itself surfaces, that we can detect in our controller.