Improve job describe and get output

[smarterclayton]

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

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

[smarterclayton]

@kubernetes/sig-cli-bugs

[smarterclayton]

/retest

[smarterclayton]

/retest

[adohe-zz]

/assign @adohe

[adohe-zz]

/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: adohe, smarterclayton

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[smarterclayton]

/retest

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/retest
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[k8s-github-robot]

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 here.