tests/reusable_buffer: test fragmented_temporary_buffer support
tests/reusable_buffer: test fragmented_temporary_buffer support

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