Render nextcloud postgres service using library chart

test/nextcloud/1.1.0/templates/postgres-service.yaml

-apiVersion: v1
-kind: Service
-metadata:
-  name: {{ template "nextcloud.fullname" . }}-postgres
-  labels:
-    app.kubernetes.io/name: {{ include "nextcloud.name" . }}-postgres
-    helm.sh/chart: {{ include "nextcloud.chart" . }}
-    app.kubernetes.io/instance: {{ .Release.Name }}
-    app.kubernetes.io/managed-by: {{ .Release.Service }}
-    app.kubernetes.io/component: app
-spec:
-  type: ClusterIP
-  ports:
-  - port: 5432
-    protocol: TCP
-    name: postgres-tcp
-  selector:
-    {{- include "nextcloud.postgres.selectorLabels" . | nindent 4 }}
+{{ $ports := list }}
+{{ $ports = mustAppend $ports (dict "name" "postgres-tcp" "port" 5432 "targetPort" 5432) }}
+{{ $params := . }}
+{{ $_ := set $params "service" (dict "type" "ClusterIP" "ports" $ports "nameSuffix" "postgres" ) }}
+{{ include "common.classes.service" $params }}

test/nextcloud/1.1.0/templates/serviceaccount.yaml

-apiVersion: v1
-kind: ServiceAccount
-metadata:
-  name: "{{ template "nextcloud.serviceAccountName" . }}"
-  namespace: {{ .Release.Namespace }}
+{{- include "common.serviceaccount" . -}}
 
 ---
 
@@ -12,7 +8,7 @@ metadata:
   name: "{{ .Release.Name }}-service-account-role-binding"
 subjects:
 - kind: ServiceAccount
-  name: "{{ template "nextcloud.serviceAccountName" . }}"
+  name: "{{ template "common.names.serviceAccountName" . }}"
   namespace: {{ .Release.Namespace }}
 roleRef:
   kind: Role