tests: perf_fast_forward: Add --sstable-format command line option
tests: perf_fast_forward: Add --sstable-format command line option

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