tests: memtable: Test that memtable with many versions is a mutation source
tests: memtable: Test that memtable with many versions is a mutation source

duarten/scylla,duarten/scylla,scylladb/scylla,avikivity/scylla,avikivity/scylla,scylladb/scylla,avikivity/scylla,scylladb/scylla,duarten/scylla,scylladb/scylla