[Release-1.30] Revert "Make svclb as simple as possible"

[dereknola]

Proposed Changes

Backport #11109
This reverts commit 1befd65.

Types of Changes

Verification

Testing

Linked Issues

User-Facing Change

Further Comments

[codecov]

Codecov Report

Attention: Patch coverage is 62.71186% with 22 lines in your changes missing coverage. Please review.

Project coverage is 43.72%. Comparing base (29fd916) to head (498e67f).
Report is 1 commits behind head on release-1.30.

Files with missing lines	Patch %	Lines
pkg/cloudprovider/servicelb.go	62.71%	19 Missing and 3 partials ⚠️

Additional details and impacted files

@@               Coverage Diff                @@
##           release-1.30   #11113      +/-   ##
================================================
- Coverage         48.59%   43.72%   -4.87%     
================================================
  Files               178      178              
  Lines             14898    14950      +52     
================================================
- Hits               7239     6537     -702     
- Misses             6343     7212     +869     
+ Partials           1316     1201     -115     

Flag	Coverage Δ
e2etests	36.40% <62.71%> (-8.73%)	⬇️
inttests	36.84% <62.71%> (+0.04%)	⬆️
unittests	13.45% <0.00%> (-0.05%)	⬇️

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