swarm/storage: improve instrumentation

swarm/storage/localstore: fix broken metric (#1373)

p2p/protocols: count different messages (#1374)

cmd/swarm: disable snapshot create test due to constant flakes (#1376)

swarm/network: remove redundant goroutine (#1377)

p2p/protocols/protocol.go

@@ -254,6 +254,7 @@ func (p *Peer) Drop() {
 func (p *Peer) Send(ctx context.Context, msg interface{}) error {
 	defer metrics.GetOrRegisterResettingTimer("peer.send_t", nil).UpdateSince(time.Now())
 	metrics.GetOrRegisterCounter("peer.send", nil).Inc(1)
+	metrics.GetOrRegisterCounter(fmt.Sprintf("peer.send.%T", msg), nil).Inc(1)
 
 	var b bytes.Buffer
 	if tracing.Enabled {