Test fix - port name for tempo-monolith is different than tempo distributed

Author: Imshelledin21

charts/k8s-monitoring/tests/integration/integration-tempo/.rendered/output.yaml

@@ -23,13 +23,14 @@ clusterMetrics:
   enabled: true
 
 integrations:
+  collector: alloy-singleton
   tempo:
     instances:
       - name: tempo
         labelSelectors:
           app.kubernetes.io/name: tempo
         metrics:
-          portName: tempo-prom-metrics
+          portName: prom-metrics
         logs:
           enabled: true