Re-introduce public and private ip-getting, add LSF test

[flikka]

Issue Resolves #12236

Approach Revert back the IP selection with private and public, but use public by default This paves way for a configurable site-config variable.

Adds a test that can be run on LSF queue cluster, that will fail (timeout) if network used is not reachable

• [ ] PR title captures the intent of the changes, and is fitting for release notes.
• [ ] Added appropriate release note label
• [ ] Commit history is consistent and clean, in line with the contribution guidelines.
• [ ] Make sure unit tests pass locally after every commit (git rebase -i main --exec 'just rapid-tests')

When applicable

• [ ] When there are user facing changes: Updated documentation
• [ ] New behavior or changes to existing untested code: Ensured that unit tests are added (See Ground Rules).
• [ ] Large PR: Prepare changes in small commits for more convenient review
• [ ] Bug fix: Add regression test for the bug
• [ ] Bug fix: Add backport label to latest release (format: 'backport release-branch-name')

[codecov-commenter]

Codecov Report

:white_check_mark: All modified and coverable lines are covered by tests. :white_check_mark: Project coverage is 90.63%. Comparing base (37cea39) to head (248baa0). :warning: Report is 14 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #12269      +/-   ##
==========================================
- Coverage   90.64%   90.63%   -0.01%     
==========================================
  Files         434      433       -1     
  Lines       29015    29028      +13     
==========================================
+ Hits        26300    26310      +10     
- Misses       2715     2718       +3     

Flag	Coverage Δ
cli-tests	37.77% <12.50%> (-0.03%)	:arrow_down:
gui-tests	69.15% <12.50%> (+0.03%)	:arrow_up:
performance-and-unit-tests	74.02% <100.00%> (-0.03%)	:arrow_down:
test	38.59% <12.50%> (-0.01%)	:arrow_down:

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[codspeed-hq[bot]]

CodSpeed Performance Report

Merging #12269 will not alter performance

_{Comparing flikka:test_zmq_network_ok (248baa0) with main (efe13e8)}

Summary

✅ 22 untouched