[stable/redis] allowing redis-exporter to talk to redis when NetworkPolicy is enabled (#9687)

* [stable/redis] allowing redis-exporter to talk to redis when NetworkPolicy is enabled

Signed-off-by: Stan Vitkovskiy <stas.vitkovsky@gmail.com>

* [stable/redis] extending NetworkPolicy so that redis-explorer can talk to redis endpoints

Signed-off-by: Stan Vitkovskiy <stas.vitkovsky@gmail.com>

stable/redis/Chart.yaml

@@ -1,5 +1,5 @@
 name: redis
-version: 4.3.0
+version: 4.3.1
 appVersion: 4.0.11
 description: Open source, advanced key-value store. It is often referred to as a data structure server since keys can contain strings, hashes, lists, sets and sorted sets.
 keywords:

stable/redis/templates/networkpolicy.yaml

@@ -22,6 +22,13 @@ spec:
         - podSelector:
             matchLabels:
               {{ template "redis.fullname" . }}-client: "true"
+        {{- if .Values.metrics.enabled }}
+        - podSelector:
+            matchLabels:
+              release: "{{ .Release.Name }}"
+              role: metrics
+              app: {{ template "redis.name" . }}
+        {{- end }}
       {{- end }}
     {{- if .Values.metrics.enabled }}
     # Allow prometheus scrapes for metrics