Fix statsd receiver aggregate memtrics in various instruments.

The receiver uses each metric's address as the key to create instruments,
but the port in the address of each metric is dynamically assigned.
This results in the StatsD receiver creating numerous instruments and
being unable to aggregate metrics together.

Fixes open-telemetry#29508, fixex open-telemetry#23809

receiver/statsdreceiver/receiver.go

@@ -119,7 +119,8 @@ func (r *statsdReceiver) Start(ctx context.Context, host component.Host) error {
 					}
 				}
 			case metric := <-transferChan:
-				if err := r.parser.Aggregate(metric.Raw, metric.Addr); err != nil {
+				addr, _ := net.ResolveIPAddr(r.config.NetAddr.Transport, r.config.NetAddr.Endpoint)
+				if err := r.parser.Aggregate(metric.Raw, addr); err != nil {
 					r.reporter.OnDebugf("Error aggregating metric", zap.Error(err))
 				}
 			case <-ctx.Done():