💩(summary) declare microservice in staging

Add the minimal extra templates and env values to deploy the micro
service.

src/helm/extra/templates/summary_keydb.yaml

@@ -0,0 +1,7 @@
+apiVersion: core.libre.sh/v1alpha1
+kind: Redis
+metadata:
+  name: redis-summary
+  namespace: {{ .Release.Namespace | quote }}
+spec:
+  disableAuth: false