Automatic merge from submit-queue

Fixes a node e2e test error

Fixes following node e2e test error:
[k8s.io] Kubelet metrics api when querying /stats/summary [It] it should report resource usage through the stats api

And the logs show following error:
```
Jun 21 15:57:13 localhost journal: tee: /test-empty-dir-mnt: Is a directory
```
And the test fails with:
```
------------------------------
• Failure [310.665 seconds]
[k8s.io] Kubelet
/root/upstream-code/gocode/src/k8s.io/kubernetes/test/e2e/framework/framework.go:685
  metrics api
  /root/upstream-code/gocode/src/k8s.io/kubernetes/test/e2e_node/kubelet_test.go:161
    when querying /stats/summary
    /root/upstream-code/gocode/src/k8s.io/kubernetes/test/e2e_node/kubelet_test.go:160
      it should report resource usage through the stats api [It]
      /root/upstream-code/gocode/src/k8s.io/kubernetes/test/e2e_node/kubelet_test.go:159

      Timed out after 300.000s.
      Expected
          <*errors.errorString | 0xc82026b6f0>: {
              s: "expected \"volume used\" to not be zero",
          }
      to be nil

      /root/upstream-code/gocode/src/k8s.io/kubernetes/test/e2e_node/kubelet_test.go:158
------------------------------
```

@kubernetes/rh-cluster-infra