* Refactor local cluster to support killing a partition
* Rework run_network_partition
* Introduce fixed leader schedule
* Plumb fixed schedule into test
* Remove the name "blob" from archivers
* Remove the name "blob" from broadcast
* Remove the name "blob" from Cluset Info
* Remove the name "blob" from Repair
* Remove the name "blob" from a bunch more places
* Remove the name "blob" from tests and book