Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>..

Retry if possible while creating latency pods in density test

Saw the [last run](https://k8s-gubernator.appspot.com/build/kubernetes-jenkins/logs/ci-kubernetes-e2e-gce-scale-performance/37) of density test on 5k-node fail due to it:

```
Expected error:
    <*errors.StatusError | 0xc44f2fd7a0>: {
        ErrStatus: {
            TypeMeta: {Kind: "", APIVersion: ""},
            ListMeta: {SelfLink: "", ResourceVersion: "", Continue: ""},
            Status: "Failure",
            Message: "timeout",
            Reason: "",
            Details: nil,
            Code: 500,
        },
    }
    timeout
not to have occurred
```

cc @kubernetes/sig-scalability-misc