[stable/owncloud] Fix chart not being upgradable (#7844)

Signed-off-by: Javier J. Salmeron Garcia <jsalmeron@bitnami.com>

stable/owncloud/Chart.yaml

@@ -1,5 +1,5 @@
 name: owncloud
-version: 2.0.6
+version: 3.0.0
 appVersion: 10.0.10
 description: A file sharing server that puts the control and security of your own data back into your hands.
 keywords:

stable/owncloud/README.md

@@ -126,3 +126,15 @@ The [Bitnami ownCloud](https://github.com/bitnami/bitnami-docker-owncloud) image
 
 Persistent Volume Claims are used to keep the data across deployments. This is known to work in GCE, AWS, and minikube.
 See the [Configuration](#configuration) section to configure the PVC or to disable persistence.
+
+## Upgrading
+
+### To 3.0.0
+
+Backwards compatibility is not guaranteed unless you modify the labels used on the chart's deployments.
+Use the workaround below to upgrade from versions previous to 3.0.0. The following example assumes that the release name is owncloud:
+
+```console
+$ kubectl patch deployment owncloud-owncloud --type=json -p='[{"op": "remove", "path": "/spec/selector/matchLabels/chart"}]'
+$ kubectl delete statefulset owncloud-mariadb --cascade=false
+```

stable/owncloud/templates/deployment.yaml

@@ -9,6 +9,10 @@ metadata:
     release: "{{ .Release.Name }}"
     heritage: "{{ .Release.Service }}"
 spec:
+  selector:
+    matchLabels:
+      app: {{ template "owncloud.fullname" . }}
+      release: "{{ .Release.Name }}"
   replicas: 1
   template:
     metadata: