Improve iptables logging

[aojea]

What type of PR is this?

Uncomment only one /kind <> line, hit enter to put that in a new line, and remove leading whitespaces from that line:

/kind api-change
/kind bug

/kind cleanup

/kind design
/kind documentation
/kind failing-test
/kind feature
/kind flake

What this PR does / why we need it:

It improves the iptables logging, current logging omit if we are using the --wait flag in iptables.
With this patch, we are able to see in the log the exact command that is being executed, much more useful for troubleshooting issues.

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Related to #82966 (comment)

Does this PR introduce a user-facing change?:

NONE

Additional documentation e.g., KEPs (Kubernetes Enhancement Proposals), usage docs, etc.:

[aojea]

/assign @danwinship
/assign @thockin

[danwinship]

/lgtm

[aojea]

/assign @dcbw

[thockin]

Thanks!

/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: aojea, thockin

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• pkg/util/iptables/OWNERS [thockin]

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