acceptance: add six node cluster in steady state
acceptance: add six node cluster in steady state

This steady-state six node cluster is a good starting point for tests
which downreplicate or attempt to delete large amounts of data. The
relevant contribution here is having created the data file.

Note that 1038 is the number of Replicas per Store taken from the
admin UI. 56GB is the size of the data directory, though the first
node clocks in at 112GB, which is a bit suspicious and might warrant
an investigation (a GCed replica should have its on-disk state removed;
perhaps RocksDB compactions can take care of the rest?).

vaibhavarora/cockroach,vivekmenezes/cockroach,vaibhavarora/cockroach,maxlang/cockroach,sunya123/cockroach,petermattis/cockroach,arjun4084346/cockroach,petermattis/cockroach,arjun4084346/cockroach,petermattis/cockroach,veteranlu/cockroach,petermattis/cockroach,vivekmenezes/cockroach,paperstreet/cockroach,arjun4084346/cockroach,maxlang/cockroach,vivekmenezes/cockroach,cockroachdb/cockroach,sunya123/cockroach,vaibhavarora/cockroach,paperstreet/cockroach,veteranlu/cockroach,sunya123/cockroach,veteranlu/cockroach,arjun4084346/cockroach,sunya123/cockroach,veteranlu/cockroach,vivekmenezes/cockroach,vivekmenezes/cockroach,glycerine/cockroach,sunya123/cockroach,paperstreet/cockroach,glycerine/cockroach,glycerine/cockroach,vaibhavarora/cockroach,petermattis/cockroach,glycerine/cockroach,petermattis/cockroach,maxlang/cockroach,petermattis/cockroach,paperstreet/cockroach,veteranlu/cockroach,cockroachdb/cockroach,paperstreet/cockroach,maxlang/cockroach,vaibhavarora/cockroach,maxlang/cockroach,vaibhavarora/cockroach,sunya123/cockroach,cockroachdb/cockroach,paperstreet/cockroach,petermattis/cockroach,arjun4084346/cockroach,veteranlu/cockroach,paperstreet/cockroach,veteranlu/cockroach,vaibhavarora/cockroach,glycerine/cockroach,veteranlu/cockroach,vivekmenezes/cockroach,cockroachdb/cockroach,vivekmenezes/cockroach,glycerine/cockroach,maxlang/cockroach,arjun4084346/cockroach,maxlang/cockroach,maxlang/cockroach,sunya123/cockroach,vaibhavarora/cockroach,vivekmenezes/cockroach,cockroachdb/cockroach,cockroachdb/cockroach,glycerine/cockroach,paperstreet/cockroach,cockroachdb/cockroach,arjun4084346/cockroach,cockroachdb/cockroach,arjun4084346/cockroach,glycerine/cockroach,sunya123/cockroach