Use redis 5 on k8s & add selector

docs/kubernetes/mailu/redis.yaml

@@ -5,6 +5,11 @@ metadata:
   namespace: mailu-mailserver
 spec:
   replicas: 1
+  selector:
+    matchLabels:
+      app: mailu-redis
+      role: mail
+      tier: backend
   template:
     metadata:
       labels:
@@ -14,7 +19,7 @@ spec:
     spec:
       containers:
         - name: redis
-        image: redis:4.0-alpine
+          image: redis:5-alpine
           imagePullPolicy: Always
           volumeMounts:
             - mountPath: /data
@@ -35,7 +40,6 @@ spec:
           persistentVolumeClaim:
             claimName: redis-hdd
 ---
-
 apiVersion: v1
 kind: Service
 metadata:

towncrier/newsfragments/1308.misc

@@ -0,0 +1 @@
+Use Redis 5.0 in kubernetes manifests