Refactor vitastor-cli & fio & qemu-img options in tests

tests/test_rm.sh

@@ -3,12 +3,11 @@
 PG_COUNT=16
 . `dirname $0`/run_3osds.sh
 
-LD_PRELOAD="build/src/client/libfio_vitastor.so" \
-    fio -thread -name=test -ioengine=build/src/client/libfio_vitastor.so -bs=4M -direct=1 -iodepth=1 \
-        -end_fsync=1 -fsync=1 -rw=write -etcd=$ETCD_URL -pool=1 -inode=1 -size=128M -cluster_log_level=10
+$VITASTOR_FIO -bs=4M -direct=1 -iodepth=1 \
+    -end_fsync=1 -fsync=1 -rw=write -pool=1 -inode=1 -size=128M -cluster_log_level=10
 
 $ETCDCTL get --prefix '/vitastor/pg/state'
 
-build/src/cmd/vitastor-cli rm-data --etcd_address $ETCD_URL --pool 1 --inode 1
+$VITASTOR_CLI rm-data --pool 1 --inode 1
 
 format_green OK