AETHER-572 Expose prometheus exporter ports for OMEC control plane services

Change-Id: I8a726b94f2bd958a814d229e182d6cf7f1f6feed
diff --git a/omec/omec-control-plane/templates/service-hss.yaml b/omec/omec-control-plane/templates/service-hss.yaml
index fad2a27..dea1e7a 100644
--- a/omec/omec-control-plane/templates/service-hss.yaml
+++ b/omec/omec-control-plane/templates/service-hss.yaml
@@ -19,6 +19,9 @@
   - name: s6a
     port: 3868
     protocol: TCP
+  - name: prometheus-exporter
+    port: {{ .Values.config.hss.prometheus.port }}
+    protocol: TCP
 ---
 apiVersion: v1
 kind: Service
@@ -47,6 +50,12 @@
 {{ tuple "hss" . | include "omec-control-plane.metadata_labels" | indent 4 }}
   type: NodePort
   ports:
+  {{- if .Values.config.hss.prometheus.nodePort.enabled }}
+    - name: prometheus-exporter
+      port: {{ .Values.config.hss.prometheus.port }}
+      protocol: TCP
+      nodePort: {{ .Values.config.hss.prometheus.nodePort.port }}
+  {{- end }}
   - name: s6a
     port: 3868
     protocol: TCP