directories: Cleanup adding dirs to the vector to work on
directories: Cleanup adding dirs to the vector to work on

The unordered_set is turned into vector since for fs::path
there's no hash() method that's needed for set.

Signed-off-by: Pavel Emelyanov <c9a32589e048e044184536f7ac71ef92fe82df3e@scylladb.com>

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