Support spec.replicas > 1 in podman play kube — allow multiple Deployment replicas

[arsenalzp]

Hello,
This PR is solving the issue #26769.
I decided to introduce this PR as draft one, because the issue doesn't have solid decision on publish port behavior.
The code introduces a new option --multiple-pods, which allows users to create multiple Pods (Deployment.spec.replicas > 1) and it changes --publish option behavior as user has to set

So, the idea is to use as many publishing ports as many Replicas is created, therefore it is user's responsibility on which ports are used on host side; no need to take random ports as those port might be blocked on firewalls, etc.
For example, if Replicas = 2 then it is necessary to use option--publish with 8080:80,8081:80 value.

Once final decision on this solution is approved then I will update Docs and crate tests

Does this PR introduce a user-facing change?

No

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This pull-request has been approved by: arsenalzp
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[TomSweeneyRedHat]

@arsenalzp good start on this, TYVM!

I agree with @flouthoc 's comments, and we'll need some tests added before we can merge this.

[TomSweeneyRedHat]

And you'll need to tweak the man pages a bit per the CI:

hack/man-page-checker
hack/xref-helpmsgs-manpages
xref-helpmsgs-manpages: 'podman kube play --help' lists '--multiple-pods', which is not in docs/source/markdown/podman-kube-play.1.md
make: *** [Makefile:608: xref-helpmsgs-manpages] Error 1

[arsenalzp]

And you'll need to tweak the man pages a bit per the CI:

hack/man-page-checker
hack/xref-helpmsgs-manpages
xref-helpmsgs-manpages: 'podman kube play --help' lists '--multiple-pods', which is not in docs/source/markdown/podman-kube-play.1.md
make: *** [Makefile:608: xref-helpmsgs-manpages] Error 1

Thank you for feedback!
Of course, I will do it. I marked this PR as draft one until solution is approved.