OZG-7573 add grpc port to service

src/main/helm/templates/service.yaml

@@ -32,6 +32,9 @@ metadata:
     component: eingang-adapter-service
 spec:
   ports:
+    - name: grpc-9090
+      port: 9090
+      protocol: TCP
     - name: http
       port: 8080
       protocol: TCP

src/test/helm/service_test.yaml

@@ -49,6 +49,16 @@ tests:
       - equal:
           path: spec.type
           value: ClusterIP
+  - it: ports should contain the grpc port
+    asserts:
+      - contains:
+          path: spec.ports
+          content:
+            name: grpc-9090
+            port: 9090
+            protocol: TCP
+          count: 1
+          any: true
   - it: ports should contain the 8080 default http port
     asserts:
       - contains: