[stable/drone] adding missing "watch" verb for ClusterRole (#10972)

Signed-off-by: Max Williams <max.williams@deliveryhero.com>

stable/drone/Chart.yaml

@@ -1,7 +1,7 @@
 name: drone
 home: https://drone.io/
 icon: https://drone.io/apple-touch-icon.png
-version: 2.0.0-rc.3
+version: 2.0.0-rc.4
 appVersion: 1.0.0-rc.4
 description: Drone is a Continuous Delivery system built on container technology
 keywords:

stable/drone/templates/role-pipeline.yaml

@@ -21,6 +21,7 @@ rules:
       - "delete"
       - "get"
       - "list"
+      - "watch"
   - apiGroups:
       - ""
     resources: