port grouping in ps command output

[kunalkushwaha]

groups the continuous ports and display in readable format.

BugFix : #1358

e.g.

$ podman run -it -p 1000-1006:1000-1006 --rm --name manyports centos /bin/bash

$ podman ps
CONTAINER ID  IMAGE                            COMMAND    CREATED        STATUS            PORTS                             NAMES
ad7b4aa8c420  docker.io/library/centos:latest  /bin/bash  4 seconds ago  Up 4 seconds ago  0.0.0.0:1000-1006->1000-1006/tcp  manyports

[openshift-ci-robot]

Hi @kunalkushwaha. Thanks for your PR.

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[rh-atomic-bot]

Can one of the admins verify this patch?
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[haircommander]

/ok-to-test

[rhatdan]

LGTM
@mheon PTAL

[TomSweeneyRedHat]

Code Changes LGTM, but could you also update the examples in the man page too please?

https://github.com/containers/libpod/blob/master/docs/podman-ps.1.md#examples

[mheon]

I tried forwarding 10,000 ports as a test of performance of the code, and the container hung in CNI adding the port mappings for five minutes before I killed it. So I guess perf for this won't be a serious issue.

[mheon]

Output looks fine

[rhatdan]

/lgtm

[rhatdan]

/approve

[openshift-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: kunalkushwaha, rhatdan

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