KafkaSource missing RBAC rule for finalizers (#318)
KafkaSource missing RBAC rule for finalizers (#318)

At least on OpenShift, which has fairly restrictive RBAC out of the
box, KafkaSource is missing a rule needed for its call to
`controllerutil.SetControllerReference(src, svc, r.scheme)` that
requires permissions on the `kafkasource/finalizers` resource.
knative-sandbox/eventing-camel,knative-sandbox/eventing-gitlab,knative-sandbox/eventing-camel,knative-sandbox/eventing-couchdb,knative-sandbox/eventing-natss,knative/eventing-contrib,knative-sandbox/eventing-couchdb,knative-sandbox/eventing-natss,knative-sandbox/eventing-prometheus,knative-sandbox/eventing-github,knative-sandbox/eventing-gitlab,knative-sandbox/eventing-kafka,knative-sandbox/eventing-ceph,knative-sandbox/eventing-prometheus,knative-sandbox/eventing-awssqs,knative-sandbox/eventing-awssqs,knative-sandbox/eventing-ceph,knative-sandbox/eventing-github,knative/eventing-contrib,knative-sandbox/eventing-kafka