pdh: report duplicate instances by occurrence instead of renaming them (#2742)

Signed-off-by: Jan-Otto Kröpke <mail@jkroepke.de>

internal/collector/hyperv/hyperv_replica_vm.go

@@ -57,7 +57,8 @@ type collectorReplicaVM struct {
 }
 
 type perfDataCounterValuesReplicaVM struct {
-	Name string
+	Name       string
+	Occurrence int
 
 	AverageReplicationLatency float64 `perfdata:"Average Replication Latency"`
 	AverageReplicationSize    float64 `perfdata:"Average Replication Size"`
@@ -198,6 +199,11 @@ func (c *Collector) collectReplicaVMPerfData(ch chan<- prometheus.Metric, scrape
 		return fmt.Errorf("failed to collect Hyper-V Replica VM metrics: %w", err)
 	}
 
+	suffixDuplicateVMs(c.perfDataObjectReplicaVM,
+		func(row *perfDataCounterValuesReplicaVM) *string { return &row.Name },
+		func(row *perfDataCounterValuesReplicaVM) int { return row.Occurrence },
+	)
+
 	for _, data := range c.perfDataObjectReplicaVM {
 		ch <- scrape.MustNewConstMetric(
 			c.replicaVMAverageReplicationLatency,