Introduce md5_hasher
Introduce md5_hasher

avikivity/scylla,duarten/scylla,scylladb/scylla,raphaelsc/scylla,duarten/scylla,kjniemi/scylla,scylladb/scylla,duarten/scylla,scylladb/scylla,raphaelsc/scylla,kjniemi/scylla,scylladb/scylla,raphaelsc/scylla,kjniemi/scylla,avikivity/scylla,avikivity/scylla