adds labels for servicemonitor to discover the services

Author: timbastin

templates/devguard/service.yaml

@@ -3,6 +3,7 @@ kind: Service
 metadata:
   name: devguard-api-service
   labels:
+    app: devguard-api
     {{- include "devguard.labels" . | nindent 4 }}
 spec:
   type: ClusterIP

templates/postgresql/postgresql-service.yaml

@@ -2,6 +2,8 @@ apiVersion: v1
 kind: Service
 metadata:
   name: postgresql
+  labels:
+    app: postgresql
 spec:
   ports:
   - name: tcp