Implementation of a no-op Tracer that I can in an interim until I rework tracing
to not be tied as a member of a Store (more generally useful by the application)
Added method to PersistentStores which will deserialize all Stores in the
Accumulo table for the purposes of the optiq impl to list all "tables" in the
"database"
Implement the initialTables method in CosmosDriver using the
PersistedStores.list method. This will auto-populate all "tables" that are in
the given instance.