chore(alloy): Enable clustering on (pod|service)monitors

k8s-wheatley/alloy/configmap.yaml

@@ -48,10 +48,18 @@ data:
     }
 
     prometheus.operator.servicemonitors "monitored_services" {
+      clustering {
+        enabled = true
+      }
+
       forward_to = [prometheus.remote_write.default.receiver]
     }
 
     prometheus.operator.podmonitors "monitored_pods" {
+      clustering {
+        enabled = true
+      }
+
       forward_to = [prometheus.remote_write.default.receiver]
     }