[#1692] metabase: Use bucket cache in ListWithCursor()

No changes in speed, but unified approach:
```
goos: linux
goarch: amd64
pkg: git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/metabase
cpu: 11th Gen Intel(R) Core(TM) i5-1135G7 @ 2.40GHz
                           │    master    │                 new                 │
                           │    sec/op    │    sec/op     vs base               │
ListWithCursor/1_item-8      6.067µ ±  8%   5.731µ ± 10%       ~ (p=0.052 n=10)
ListWithCursor/10_items-8    25.40µ ± 11%   26.12µ ± 13%       ~ (p=0.971 n=10)
ListWithCursor/100_items-8   210.7µ ±  9%   203.2µ ±  6%       ~ (p=0.280 n=10)
geomean                      31.90µ         31.22µ        -2.16%

                           │    master    │                  new                  │
                           │     B/op     │     B/op      vs base                 │
ListWithCursor/1_item-8      3.287Ki ± 0%   3.287Ki ± 0%       ~ (p=1.000 n=10) ¹
ListWithCursor/10_items-8    15.63Ki ± 0%   15.62Ki ± 0%       ~ (p=0.328 n=10)
ListWithCursor/100_items-8   138.1Ki ± 0%   138.1Ki ± 0%       ~ (p=0.340 n=10)
geomean                      19.21Ki        19.21Ki       -0.00%
¹ all samples are equal

                           │   master    │                 new                  │
                           │  allocs/op  │  allocs/op   vs base                 │
ListWithCursor/1_item-8       109.0 ± 0%    109.0 ± 0%       ~ (p=1.000 n=10) ¹
ListWithCursor/10_items-8     380.0 ± 0%    380.0 ± 0%       ~ (p=1.000 n=10) ¹
ListWithCursor/100_items-8   3.082k ± 0%   3.082k ± 0%       ~ (p=1.000 n=10) ¹
geomean                       503.5         503.5       +0.00%
¹ all samples are equal
```

Change-Id: Ic11673427615053656b2a60068a6d4dbd27af2cb
Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>

pkg/local_object_storage/metabase/list.go

@@ -139,8 +139,7 @@ func (db *DB) listWithCursor(tx *bbolt.Tx, result []objectcore.Info, count int,
 
 	var containerID cid.ID
 	var offset []byte
-	graveyardBkt := tx.Bucket(graveyardBucketName)
-	garbageBkt := tx.Bucket(garbageBucketName)
+	bc := newBucketCache()
 
 	rawAddr := make([]byte, cidSize, addressKeySize)
 
@@ -169,7 +168,7 @@ loop:
 		bkt := tx.Bucket(name)
 		if bkt != nil {
 			copy(rawAddr, cidRaw)
-			result, offset, cursor, err = selectNFromBucket(bkt, objType, graveyardBkt, garbageBkt, rawAddr, containerID,
+			result, offset, cursor, err = selectNFromBucket(bc, bkt, objType, rawAddr, containerID,
 				result, count, cursor, threshold, currEpoch)
 			if err != nil {
 				return nil, nil, err
@@ -204,9 +203,10 @@ loop:
 
 // selectNFromBucket similar to selectAllFromBucket but uses cursor to find
 // object to start selecting from. Ignores inhumed objects.
-func selectNFromBucket(bkt *bbolt.Bucket, // main bucket
+func selectNFromBucket(
+	bc *bucketCache,
+	bkt *bbolt.Bucket, // main bucket
 	objType objectSDK.Type, // type of the objects stored in the main bucket
-	graveyardBkt, garbageBkt *bbolt.Bucket, // cached graveyard buckets
 	cidRaw []byte, // container ID prefix, optimization
 	cnt cid.ID, // container ID
 	to []objectcore.Info, // listing result
@@ -241,6 +241,8 @@ func selectNFromBucket(bkt *bbolt.Bucket, // main bucket
 		}
 
 		offset = k
+		graveyardBkt := getGraveyardBucket(bc, bkt.Tx())
+		garbageBkt := getGarbageBucket(bc, bkt.Tx())
 		if inGraveyardWithKey(append(cidRaw, k...), graveyardBkt, garbageBkt) > 0 {
 			continue
 		}
@@ -251,7 +253,7 @@ func selectNFromBucket(bkt *bbolt.Bucket, // main bucket
 		}
 
 		expEpoch, hasExpEpoch := hasExpirationEpoch(&o)
-		if hasExpEpoch && expEpoch < currEpoch && !objectLocked(bkt.Tx(), cnt, obj) {
+		if hasExpEpoch && expEpoch < currEpoch && !objectLockedWithCache(bc, bkt.Tx(), cnt, obj) {
 			continue
 		}