- `StatefulSet` names must be DNS labels, rather than subdomains. Any `StatefulSet`
  which took advantage of subdomain validation (by having dots in the name) can't
  possibly have worked, because we eventually set `pod.spec.hostname` from the `StatefulSetName`,

### Other notable changes

* Update kube-dns to 1.14.5 ([#53114](https://github.com/kubernetes/kubernetes/pull/53114), [@bowei](https://github.com/bowei))

            "type": "string"
          }
        },
        "required": [
          "name",
          "expression"
        ],
        "type": "object"