[stable/redis] Allow slave pods to connect to master when networkPolicy is enabled (#15082)

* Adding network policy label for slave pods

Signed-off-by: YITAEK HWANG <yitaek@gmail.com>

* [stable/redis] fixing ordering of if statements in networkpolicy

Signed-off-by: YITAEK HWANG <yitaek@gmail.com>

stable/redis/Chart.yaml

@@ -1,6 +1,6 @@
 apiVersion: v1
 name: redis
-version: 8.0.12
+version: 8.0.13
 appVersion: 5.0.5
 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

@@ -32,6 +32,13 @@ spec:
             role: metrics
             app: {{ template "redis.name" . }}
       {{- end }}
+      {{- if ge .Values.cluster.slaveCount 1.0 }}
+      - podSelector:
+          matchLabels:
+            release: "{{ .Release.Name }}"
+            role: slave
+            app: {{ template "redis.name" . }}
+      {{- end }}
       {{- end }}
     {{- if .Values.metrics.enabled }}
     # Allow prometheus scrapes for metrics