tests/functional: Fix functional test 055 to be passed

test scenario need to change, becouse metadata-store must not delete.

Signed-off-by: Yasuhito Fukuda <fukuda.yasuhito@po.ntts.co.jp>
Signed-off-by: Satoshi Kuramochi <act.kura@gmail.com>

tests/functional/055

@@ -14,31 +14,32 @@ _cluster_format -c 6
 _vdi_create test 120M -P
 
 # simulate one disk failure
-_safe_remove $STORE/0/d0
+_safe_remove $STORE/0/d1
 _random | $DOG vdi write test
 _wait_for_sheep_recovery 0
 $DOG vdi check test
 $DOG cluster info | _filter_cluster_info
 
 # simulate multiple disk failure
-_safe_remove $STORE/1/d0
-_random | $DOG vdi write test &
-sleep 1
 _safe_remove $STORE/1/d1
+sleep 1
+_safe_remove $STORE/1/d2
+_random | $DOG vdi write test &
 _wait_for_sheep_recovery 0
 wait
 $DOG vdi check test
 $DOG cluster info | _filter_cluster_info
 
 # simulate all disks failure
-_safe_remove $STORE/1/d2
+_safe_remove $STORE/1/d0
 _random | $DOG vdi write test
+_wait_for_sheep_recovery 0
 $DOG vdi check test
 $DOG cluster info | _filter_cluster_info
 
 # simulate simultaneous multiple disks failure
-_safe_remove $STORE/2/d0
 _safe_remove $STORE/2/d1
+_safe_remove $STORE/2/d2
 dd if=/dev/zero | $DOG vdi write test
 $DOG vdi check test
 $DOG cluster info | _filter_cluster_info