kv: add Delete to correctness tests
kv: add Delete to correctness tests

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