storage_service: Introduce a rwlock to serialize management operations
storage_service: Introduce a rwlock to serialize management operations

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