integration: make fly downgrade ignore new events
integration: make fly downgrade ignore new events

(though it might make sense to just make this flag the default behavior)

Signed-off-by: Alex Suraci <925ba519bbf1a06224928b692ef88b93aee946af@gmail.com>
Co-authored-by: Rui Yang <4d6b7b1f23ec6027b801cceb8a18a6505e32557e@vmware.com>

concourse/concourse,concourse/concourse,concourse/concourse,concourse/concourse,concourse/concourse