[stable/kube-lego] Adds 'update' permission for services (#2502)

* Adds 'update' permission to kube-lego for services.

* Bumps chart version

stable/kube-lego/Chart.yaml

@@ -1,7 +1,7 @@
 apiVersion: v1
 description: Automatically requests certificates from Let's Encrypt
 name: kube-lego
-version: 0.2.0
+version: 0.2.1
 keywords:
   - kube-lego
   - letsencrypt

stable/kube-lego/templates/role.yaml

@@ -17,6 +17,7 @@ rules:
   - create
   - get
   - delete
+  - update
 - apiGroups:
   - extensions
   resources: