Automatic merge from submit-queue (batch tested with PRs 64575, 65120, 65463, 65434, 65522). 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>.

Improve job describe and get output

For get, condense completions and success into a single column, and
print the job duration. Use a new variant of ShortHumanDuration that
shows more significant digits, since duration matters more for jobs.

```
NAME                                   COMPLETIONS   DURATION   AGE
image-mirror-origin-v3.10-1529985600   1/1           47s        42m
image-mirror-origin-v3.11-1529985600   1/1           74s        42m
image-pruner-1529971200                1/1           60m        4h
```

The completions column can be:

```
COMPLETIONS
0/1        # completions nil or 1, succeeded 0
1/1        # completions nil or 1, succeeded 1
0/3        # completions 3, succeeded 1
1/3        # completions 3, succeeded 1
0/1 of 30  # parallelism of 30, completions is nil
```

Update describe to show the completion time and the duration.

```
Start Time:     Mon, 25 Jun 2018 20:00:05 -0400
Completed At:   Mon, 25 Jun 2018 21:00:34 -0400
Duration:       60m
```

This is more useful than the current output:

```
NAME                                   DESIRED   SUCCESSFUL   AGE
image-mirror-origin-v3.10-1529982000   1         1            54m
image-mirror-origin-v3.11-1529982000   1         1            54m
image-pruner-1529971200                1         1            3h
```

```release-note
Improve the display of jobs in `kubectl get` and `kubectl describe` to emphasize progress and duration.
```