Description
Currently, periodic push will push everything in its simple store to the VB replicas regardless of whether or not the information being pushed is really owned by the VB master or not.
It should really need to filter out information so that only the VBs of the master is sent to the replicas. This is so that backfill ckpts + tasks are in tandem with mainline ckpts, and we're not "gossipping" out-of-date checkpoints/backfillTasks/BackfillCkpt tuples that can potentially propagate back to the VB master itself and dirty the master's information