Add flaky test reporter config for eventing-kafka-broker (#2347)
Add flaky test reporter config for eventing-kafka-broker (#2347)

Signed-off-by: Pierangelo Di Pilato <b6054fff5975a97a6b1347c22e6e7915c701af4c@gmail.com>
knative/test-infra,knative/test-infra,knative/test-infra