Deprecate stable/consul (#22696)

stable/consul is deprecated in favor of HashiCorp's official Helm chart.

Signed-off-by: Luke Kysow <1034429+lkysow@users.noreply.github.com>

stable/consul/Chart.yaml

@@ -1,14 +1,17 @@
 apiVersion: v1
 name: consul
 home: https://github.com/hashicorp/consul
-version: 3.9.5
+version: 3.9.6
 appVersion: 1.5.3
 description: Highly available and distributed service discovery and key-value store
   designed with support for the modern data center to make distributed systems and
   configuration easy.
 icon: https://raw.githubusercontent.com/hashicorp/consul/bce3809dfca37b883828c3715b84143dd71c0f85/website/source/assets/images/favicons/android-chrome-512x512.png
 sources:
 - https://github.com/kelseyhightower/consul-on-kubernetes
-maintainers:
-- name: lachie83
-  email: lachlan.evenson@microsoft.com
+# NOTE: Deprecated charts can't have maintainers but leaving commented-out for
+# posterity.
+# maintainers:
+# - name: lachie83
+#   email: lachlan.evenson@microsoft.com
+deprecated: true

stable/consul/README.md

@@ -1,5 +1,11 @@
 # Consul Helm Chart
 
+## Deprecated
+This chart is deprecated in favor of HashiCorp's [Official Helm Chart](https://github.com/hashicorp/consul-helm).
+
+See [https://www.consul.io/docs/k8s/installation/overview](https://www.consul.io/docs/k8s/installation/overview)
+for installation instructions.
+
 ## Prerequisites Details
 * Kubernetes 1.10+
 * PV support on underlying infrastructure