koordlet: fix flaky tests

[saintube]

Ⅰ. Describe what this PR does

koordlet: Fix flaky tests in be_resource_collector_test.go. Fix flag parsing UTs which cannot run with go test -race.

Ⅱ. Does this pull request fix one issue?

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

Patch coverage has no change and project coverage change: -0.03% ⚠️

Comparison is base (9232daf) 64.07% compared to head (6142886) 64.04%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1498      +/-   ##
==========================================
- Coverage   64.07%   64.04%   -0.03%     
==========================================
  Files         340      340              
  Lines       35057    35056       -1     
==========================================
- Hits        22463    22452      -11     
- Misses      10931    10942      +11     
+ Partials     1663     1662       -1     

Flag	Coverage Δ
unittests	64.04% <ø> (-0.03%)	⬇️

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

Files Changed	Coverage Δ
...statesinformer/impl/states_noderesourcetopology.go	66.10% <ø> (-0.08%)	⬇️

... and 2 files with indirect coverage changes

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[hormes]

/lgtm
/approve

[koordinator-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: hormes

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