Added debug log of AllocatedIPCount of ippool

[weizhoublue]

robot cherry pick PR #3926 from ty-dc,to branch release-v0.8, action https://github.com/spidernet-io/spiderpool/actions/runs/10933367572 , commits 51c3e4b

[codecov]

Codecov Report

Attention: Patch coverage is 71.42857% with 2 lines in your changes missing coverage. Please review.

Project coverage is 81.47%. Comparing base (1db83c3) to head (5e83a9d).

Files with missing lines	Patch %	Lines
pkg/ippoolmanager/ippool_manager.go	71.42%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@               Coverage Diff                @@
##           release-v0.8    #4080      +/-   ##
================================================
- Coverage         81.54%   81.47%   -0.08%     
================================================
  Files                49       49              
  Lines              4340     4345       +5     
================================================
+ Hits               3539     3540       +1     
- Misses              640      642       +2     
- Partials            161      163       +2     

Flag	Coverage Δ
unittests	81.47% <71.42%> (-0.08%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
pkg/ippoolmanager/ippool_manager.go	87.37% <71.42%> (-0.69%)	⬇️

... and 1 file with indirect coverage changes