[#2116] metrics: Track physical object capacity in the container

Currently we track based on `PayloadSize`, because it is already stored
in the metabase and it is easier to calculate without slowing down the
whole system.

Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
Signed-off-by: Pavel Karpy <p.karpy@yadro.com>

pkg/local_object_storage/engine/shards.go

@@ -49,6 +49,10 @@ func (m *metricsWithID) SetReadonly(readonly bool) {
 	m.mw.SetReadonly(m.id, readonly)
 }
 
+func (m *metricsWithID) AddToContainerSize(cnr string, size int64) {
+	m.mw.AddToContainerSize(cnr, size)
+}
+
 // AddShard adds a new shard to the storage engine.
 //
 // Returns any error encountered that did not allow adding a shard.