Expose Prometheus Metrics Server with k8s Service

To let us able to scrape metrics from the Operator
e.g. with a ServiceMonitor we need to have a Service
which provides named port

close CrunchyData#61

Signed-off-by: Alex Szakaly <alex.szakaly@gmail.com>

helm/install/Chart.yaml

@@ -2,5 +2,5 @@ apiVersion: v2
 name: pgo
 description: Installer for PGO, the open source Postgres Operator from Crunchy Data
 type: application
-version: 0.2.2
+version: 0.2.3
 appVersion: 5.0.4

helm/install/templates/manager.yaml

@@ -29,6 +29,9 @@ spec:
         - name: PGO_TARGET_NAMESPACE
           valueFrom: { fieldRef: { apiVersion: v1, fieldPath: metadata.namespace } }
         {{- end }}
+        ports:
+        - containerPort: 8080
+          name: metrics
         securityContext:
           allowPrivilegeEscalation: false
           readOnlyRootFilesystem: true

helm/install/templates/service.yaml

@@ -0,0 +1,14 @@
+apiVersion: v1
+kind: Service
+metadata:
+  labels:
+    {{- include "install.labels" . | nindent 4 }}
+  name: {{ .Chart.Name }}
+spec:
+  ports:
+  - name: metrics
+    port: 9090
+    protocol: TCP
+    targetPort: metrics
+  selector:
+    {{- include "install.crunchyLabels" . | nindent 5 }}