[#1181] shard: Set Disabled as default mode for components

Signed-off-by: Anton Nikiforov <an.nikiforov@yadro.com>

pkg/local_object_storage/blobstor/blobstor.go

@@ -54,6 +54,7 @@ func initConfig(c *cfg) {
 // New creates, initializes and returns new BlobStor instance.
 func New(opts ...Option) *BlobStor {
 	bs := new(BlobStor)
+	bs.mode = mode.Disabled
 	initConfig(&bs.cfg)
 
 	for i := range opts {

pkg/local_object_storage/metabase/db.go

@@ -107,6 +107,7 @@ func New(opts ...Option) *DB {
 				matchBucket: stringCommonPrefixMatcherBucket,
 			},
 		},
+		mode: mode.Disabled,
 	}
 }
 

pkg/local_object_storage/pilorama/boltdb.go

@@ -81,6 +81,7 @@ func NewBoltForest(opts ...Option) ForestStorage {
 			openFile:      os.OpenFile,
 			metrics:       &noopMetrics{},
 		},
+		mode: mode.Disabled,
 	}
 
 	for i := range opts {

pkg/local_object_storage/writecache/cachebbolt.go

@@ -60,7 +60,7 @@ var defaultBucket = []byte{0}
 func New(opts ...Option) Cache {
 	c := &cache{
 		flushCh: make(chan objectInfo),
-		mode:    mode.ReadWrite,
+		mode:    mode.Disabled,
 
 		compressFlags: make(map[string]struct{}),
 		options: options{