koordlet: fix throw Can't get node error during initialization

[JasonRD]

Ⅰ. Describe what this PR does

fix the Koordlet throw "Can't get node" during during initialization, when guessed driver failed from Cgroup name.

Ⅱ. Does this pull request fix one issue?

fixes #664

Ⅲ. Describe how to verify it

Ⅳ. Special notes for reviews

V. Checklist

• I have written necessary docs and comments
• I have added necessary unit tests and integration tests
• All checks passed in make test

[codecov]

Codecov Report

Base: 68.64% // Head: 68.63% // Decreases project coverage by -0.01% ⚠️

Coverage data is based on head (3d2f077) compared to base (a6559fb).
Patch has no changes to coverable lines.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #732      +/-   ##
==========================================
- Coverage   68.64%   68.63%   -0.02%     
==========================================
  Files         205      205              
  Lines       23342    23342              
==========================================
- Hits        16024    16021       -3     
- Misses       6208     6210       +2     
- Partials     1110     1111       +1     

Flag	Coverage Δ
unittests	68.63% <ø> (-0.02%)	⬇️

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

Impacted Files	Coverage Δ
pkg/util/httputil/reverseproxy.go	84.30% <0.00%> (-0.80%)	⬇️

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[zwzhang0107]

/lgtm

[hormes]

/approve

[koordinator-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: hormes

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