fix: fix get null podCIDR and serviceCIDR

[cyclinder]

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What issue(s) does this PR fix:

Fixes #4465

Special notes for your reviewer:

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 41 lines in your changes missing coverage. Please review.

Project coverage is 1.39%. Comparing base (0a17413) to head (1d6d9e4).
Report is 2 commits behind head on release-v0.9.

Files with missing lines	Patch %	Lines
pkg/coordinatormanager/coordinator_informer.go	0.00%	41 Missing ⚠️

Additional details and impacted files

@@               Coverage Diff                @@
##           release-v0.9   #4477       +/-   ##
================================================
- Coverage         80.90%   1.39%   -79.51%     
================================================
  Files                50      55        +5     
  Lines              5472    6359      +887     
================================================
- Hits               4427      89     -4338     
- Misses              882    6260     +5378     
+ Partials            163      10      -153     

Flag	Coverage Δ
unittests	1.39% <0.00%> (-79.51%)	⬇️

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

Files with missing lines	Coverage Δ
pkg/coordinatormanager/coordinator_informer.go	0.00% <0.00%> (ø)

... and 54 files with indirect coverage changes