use service for uffizzi cluster metrics

chart/templates/controller-manager-metrics-http-service_service.yaml

@@ -0,0 +1,16 @@
+apiVersion: v1
+kind: Service
+metadata:
+  labels: {{ include "common.labels.standard" . | nindent 4 }}
+    app.kubernetes.io/component: manager
+    app.kubernetes.io/part-of: uffizzi
+  name: {{ include "common.names.fullname" . | trunc 55 | trimSuffix "-" }}-http-metrics
+  namespace: {{ .Release.Namespace | quote }}
+spec:
+  ports:
+  - name: http
+    port: 8080
+    protocol: TCP
+    targetPort: https
+  selector:
+    control-plane: controller-manager

chart/templates/controller-manager_deployment.yaml

@@ -66,6 +66,10 @@ spec:
         command:
         - /manager
         image: "{{ .Values.image.repository }}:{{ default .Chart.AppVersion .Values.image.tag }}"
+        ports:
+        - containerPort: 8080
+          name: http
+          protocol: TCP
         livenessProbe:
           httpGet:
             path: /healthz

src/test/e2e/metrics_test.go

@@ -0,0 +1,4 @@
+// contains helper functions to test metrics exported by
+// the uffizzi cluster operator
+
+package e2e

src/test/e2e/ucluster_lifecycle_test.go

@@ -1,3 +1,6 @@
+// ucluster_lifecycle_test contains helper functions which are used
+// for testing the lifecycle of the UffizziCluster resource.
+
 package e2e
 
 import (