def find_snapshot_timestamp
      last_snap = behavior(:find_snapshots).last
      last_snap.tags.detect { |t| t["name"] =~ /timestamp=(\d+)$/ }
      timestamp = $1
    end
def find_snapshot_timestamp
      last_snap = behavior(:find_snapshots).last
      last_snap.tags.detect { |t| t["name"] =~ /timestamp=(\d+)$/ }
      timestamp = $1
    end
Returns the timestamp of the latest snapshot for testing OPT_DB_RESTORE_TIMESTAMP_OVERRIDE