Fix port number for upf-metrics service

Change-Id: Iac516d3ed27965939b6a7ca9c4b42cddee492cf6
diff --git a/omec/omec-user-plane/templates/service-upf.yaml b/omec/omec-user-plane/templates/service-upf.yaml
index 21b727b..c2eabdd 100644
--- a/omec/omec-user-plane/templates/service-upf.yaml
+++ b/omec/omec-user-plane/templates/service-upf.yaml
@@ -58,4 +58,4 @@
   ports:
   - name: prometheus-exporter
     protocol: TCP
-    port: 8808
+    port: 8080