When a primary Package is checksummed, reset verification on secondaries

Problem

When a resource is checksummed on the primary, we need to re-verify on the secondary. By resetting the verification fields on secondaries, the verification jobs will notice these are pending verification, and will then verify them.

This supports:

• Reverification
• Updates of mutable data types (e.g. snippet repos)

Proposal

E.g.:

• In VerifiableReplicator
  • Define event :checksum_succeeded
  • Define def handle_after_checksum_succeeded which publish(:checksum_succeeded) if Geo.primary? (see e.g. handle_after_create_commit)
  • Define def consume_event_checksum_succeeded which transitions verification state of the registry to verification_pending so the batch worker picks it up.
  • Call the hook handle_after_checksum_succeeded after checksum_succeeded and if primary. E.g. in #verify or some sub-method
    • We can't use a before_transition since we want the event to be produced even if the checksum is not changed and the success state remains a success

Testing

TBD