[incubator/redis-cache] deprecating chart (#24269)

Signed-off-by: Matt Farina <matt@mattfarina.com>

incubator/redis-cache/Chart.yaml

@@ -1,15 +1,11 @@
 apiVersion: v1
-description: A pure in-memory redis cache, using statefulset and redis-sentinel-micro
+description: DEPRECATED A pure in-memory redis cache, using statefulset and redis-sentinel-micro
 name: redis-cache
-version: 0.5.1
+version: 0.5.2
 appVersion: 4.0.12-alpine
 home: https://redis.io/
 icon: https://redis.io/images/redis-white.png
 sources:
 - https://github.com/antirez/redis
 - https://github.com/dhilipkumars/redis-sentinel-micro/tree/k8s
-maintainers:
-- name: dhilipkumars
-  email: dhilip.kumar.s@huawei.com
-- name: cpanato
-  email: ctadeu@gmail.com
+deprecated: true

incubator/redis-cache/OWNERS

@@ -1,6 +0,0 @@
-approvers:
-- cpanato
-- dhilipkumars
-reviewers:
-- cpanato
-- dhilipkumars

incubator/redis-cache/README.md

@@ -7,6 +7,10 @@ For more information, see the Helm Charts [Deprecation and Archive Notice](https
 
 This chart will allow us to use redis as a pure in-memory cache, this uses a special utility to perform master-slave promotion which overcomes this [problem](https://redis.io/topics/replication#safety-of-replication-when-master-has-persistence-turned-off), K8s could restart the master way before it is detected and agreed among the redis-sentinels.
 
+## DEPRECATION NOTICE
+
+This chart is deprecated and no longer supported.
+
 ###Prerequisites
 * Kubernetes 1.10+