[#1168] 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 {