We are managing gerritbot with ansible and docker on eavesdrop now.
That means when project-config updates the gerritbot channels.yaml file
we want to trigger the infra-prod-service-eavesdrop job to update the
gerritbot configs on eavesdrop.
Change-Id: I0e0991e9b93370fe6939122ecb2cd17eb50a1688
ca7626c35e