acceptance: enables clusters of both 5 and 7 nodes in all acceptance tests
acceptance: enables clusters of both 5 and 7 nodes in all acceptance tests

This was waiting on #4445 which has been resolved.

petermattis/cockroach,cockroachdb/cockroach,bg451/cockroach,petermattis/cockroach,bg451/cockroach,arjun4084346/cockroach,cockroachdb/cockroach,sunya123/cockroach,paperstreet/cockroach,veteranlu/cockroach,maxlang/cockroach,glycerine/cockroach,nieyy/cockroach,nieyy/cockroach,vivekmenezes/cockroach,maxlang/cockroach,sunya123/cockroach,vivekmenezes/cockroach,vivekmenezes/cockroach,bg451/cockroach,glycerine/cockroach,nieyy/cockroach,cockroachdb/cockroach,veteranlu/cockroach,glycerine/cockroach,maxlang/cockroach,paperstreet/cockroach,veteranlu/cockroach,petermattis/cockroach,cockroachdb/cockroach,cuongdo/cockroach,nieyy/cockroach,sunya123/cockroach,arjun4084346/cockroach,paperstreet/cockroach,cuongdo/cockroach,vaibhavarora/cockroach,arjun4084346/cockroach,vaibhavarora/cockroach,vaibhavarora/cockroach,vaibhavarora/cockroach,arjun4084346/cockroach,paperstreet/cockroach,paperstreet/cockroach,cockroachdb/cockroach,paperstreet/cockroach,bg451/cockroach,maxlang/cockroach,maxlang/cockroach,cuongdo/cockroach,vivekmenezes/cockroach,bg451/cockroach,vivekmenezes/cockroach,bg451/cockroach,sunya123/cockroach,arjun4084346/cockroach,arjun4084346/cockroach,petermattis/cockroach,cockroachdb/cockroach,vivekmenezes/cockroach,maxlang/cockroach,nieyy/cockroach,glycerine/cockroach,glycerine/cockroach,glycerine/cockroach,sunya123/cockroach,veteranlu/cockroach,vaibhavarora/cockroach,veteranlu/cockroach,nieyy/cockroach,cockroachdb/cockroach,petermattis/cockroach,veteranlu/cockroach,vivekmenezes/cockroach,vivekmenezes/cockroach,petermattis/cockroach,cuongdo/cockroach,nieyy/cockroach,sunya123/cockroach,maxlang/cockroach,paperstreet/cockroach,nieyy/cockroach,vaibhavarora/cockroach,cuongdo/cockroach,cockroachdb/cockroach,veteranlu/cockroach,cuongdo/cockroach,vaibhavarora/cockroach,sunya123/cockroach,petermattis/cockroach,glycerine/cockroach,arjun4084346/cockroach,veteranlu/cockroach,vaibhavarora/cockroach,bg451/cockroach,sunya123/cockroach,maxlang/cockroach,petermattis/cockroach,arjun4084346/cockroach,cuongdo/cockroach,glycerine/cockroach,cuongdo/cockroach,paperstreet/cockroach