NAS-124262 / 24.04 / Remove haproxy from ixdiagnose

[Qubad786]

Context

HAProxy was removed in DragonFish so there is no reason to capture it's contents in debug.

This PR removes the HAProxy related info gathering in VM plugin.

[bugclerk]

Jira URL: https://ixsystems.atlassian.net/browse/NAS-124262

[codecov]

Codecov Report

Merging #85 (ed02aa8) into master (ab54dac) will decrease coverage by 0.57%.
Report is 4 commits behind head on master.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master      #85      +/-   ##
==========================================
- Coverage   94.85%   94.29%   -0.57%     
==========================================
  Files          92       92              
  Lines        1827     1840      +13     
==========================================
+ Hits         1733     1735       +2     
- Misses         94      105      +11     

Files	Coverage Δ
ixdiagnose/plugins/vm.py	100.00% <100.00%> (ø)

... and 1 file with indirect coverage changes

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[bmeagherix]

I see haproxy was removed in Dragonfish in NAS-123731

However, I don't see that change being backported to 23.10, so I'm wondering why this PR has the backport-23.10 label?

[Qubad786]

@bmeagherix thank you for pointing out - fixed the label