tests: create directories for user column families as well
tests: create directories for user column families as well

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