[stable/gocd] Deprecate stable gocd helm chart (#23780)

* Deprecate GoCD Helm Chart

Signed-off-by: GaneshSPatil <ganeshpl@thoughtworks.com>

* Update Changelog

Signed-off-by: GaneshSPatil <ganeshpl@thoughtworks.com>

stable/gocd/CHANGELOG.md

@@ -1,3 +1,5 @@
+### 1.31.0
+* [71ebc3374](https://github.com/kubernetes/charts/commit/71ebc3374): Deprecate GoCD Helm Chart.
 ### 1.30.0
 * [e97a5d88f](https://github.com/kubernetes/charts/commit/e97a5d88f): Bump up GoCD Version to 20.7.0
 ### 1.29.0

stable/gocd/Chart.yaml

@@ -1,7 +1,7 @@
 apiVersion: v1
 name: gocd
 home: https://www.gocd.org/
-version: 1.30.0
+version: 1.31.0
 appVersion: 20.7.0
 description: GoCD is an open-source continuous delivery server to model and visualize complex workflows with ease.
 icon: https://gocd.github.io/assets/images/go-icon-black-192x192.png
@@ -16,10 +16,12 @@ keywords:
 - continuous-testing
 sources:
 - https://github.com/gocd/gocd
-maintainers:
-- name: arvindsv
-  email: arvind@thoughtworks.com
-- name: ganeshspatil
-  email: ganeshpl@thoughtworks.com
-- name: varshavaradarajan
-  email: varshasvaradarajan@gmail.com
+deprecated: true
+# NOTE: Deprecated charts can't have maintainers but leaving commented-out for posterity.
+# maintainers:
+# - name: arvindsv
+#  email: arvind@thoughtworks.com
+# - name: ganeshspatil
+#  email: ganeshpl@thoughtworks.com
+# - name: varshavaradarajan
+#  email: varshasvaradarajan@gmail.com

stable/gocd/README.md

@@ -4,6 +4,24 @@
 
 [GoCD](https://www.gocd.org/) is an open-source continuous delivery server to model and visualize complex workflow with ease.
 
+# Deprecated
+With upcoming deprecation of `helm/charts` repository,  this chart is deprecated in favor of GoCD's [Official Helm Chart](https://github.com/gocd/helm-chart).
+
+You can use this new repository by doing:
+
+```bash
+helm repo add gocd https://gocd.github.io/helm-chart
+helm repo update
+```
+You can now use `gocd/gocd` instead of `stable/gocd` in all your Helm commands, e.g.:
+
+```bash
+# New installation
+helm install --name <RELEASE_NAME> gocd/gocd
+# Upgrade existing installation
+helm upgrade --name <RELEASE_NAME> gocd/gocd
+```
+
 # Introduction
 
 This chart bootstraps a single node GoCD server and GoCD agents on a [Kubernetes](http://kubernetes.io) cluster using the [Helm](https://helm.sh) package manager.