Use dashboard ServiceAccount for init job

deployment/helmchart/templates/job-initialize-user.yaml

@@ -21,6 +21,7 @@ spec:
         component: dashboard
     spec:
       restartPolicy: Never
+      serviceAccountName: {{ include "dashboard.serviceAccountName" . }}
       containers:
       - name: {{ .Chart.Name }}-login-create-admin
         image: {{ template "backend.image" . }}