Jenkins needs to be able to patch the Deployment to trigger a restart
after it builds a new container image for _dch-webhooks_.
Note that this manifest must be applied on its own **without
Kustomize**. Kustomize seems to think the `dch-webhooks` in
`resourceNames` refers to the ConfigMap it manages and "helpfully"
renames it with the name suffix hash. It's _not_ the ConfigMap, though,
but there's not really any way to tell it this.