[bitnami/redis] Added extraEnvVars for metrics container (#9482)

* Added extraEnvVars for metrics container

Signed-off-by: Abhimanyu Saharan <desk.abhimanyu@gmail.com>

* Bumped chart version from 16.5.4 to 16.6.0

Signed-off-by: Abhimanyu Saharan <desk.abhimanyu@gmail.com>

bitnami/redis/values.yaml

@@ -1281,6 +1281,13 @@ metrics:
   ##   check-keys: myKey,myOtherKey
   ##
   extraArgs: {}
+  ## @param metrics.extraEnvVars Array with extra environment variables to add to Redis™ exporter
+  ## e.g:
+  ## extraEnvVars:
+  ##   - name: FOO
+  ##     value: "bar"
+  ##
+  extraEnvVars: []
   ## Configure Container Security Context
   ## ref: https://kubernetes.io/docs/tasks/configure-pod-container/security-context/#set-the-security-context-for-a-pod
   ## @param metrics.containerSecurityContext.enabled Enabled Redis™ exporter containers' Security Context