Set iodepth=1 to suppress warning from fio

fio warning is "note: both iodepth >= 1 and synchronous I/O engine are selected, queue
depth will be capped at 1"

Author: echiugoog

internal/script/script_defs.go

@@ -1174,7 +1174,7 @@ sync
 # single-threaded read & write bandwidth test
 fio --name=bandwidth --directory=$test_dir --numjobs=$numjobs \
 --size="$file_size_g"G --time_based --runtime=$runtime --ramp_time=$ramp_time --ioengine=$ioengine \
---direct=1 --verify=0 --bs=1M --iodepth=64 --rw=rw \
+--direct=1 --verify=0 --bs=1M --iodepth=1 --rw=rw \
 --group_reporting=1 --iodepth_batch_submit=64 \
 --iodepth_batch_complete_max=64
 rm -rf $test_dir