refactor: 修复定时任务trace不连通的问题 --story=126421543

[dengyh]

Reviewed, transaction id: 54439

[codecov-commenter]

Codecov Report

❌ Patch coverage is 28.57143% with 5 lines in your changes missing coverage. Please review.
✅ Project coverage is 58.89%. Comparing base (608da2d) to head (c1ccd6f).
⚠️ Report is 6 commits behind head on master.

Files with missing lines	Patch %	Lines
gcloud/core/trace.py	25.00%	3 Missing ⚠️
gcloud/periodictask/signals/handlers.py	33.33%	2 Missing ⚠️

❌ Your patch status has failed because the patch coverage (28.57%) is below the target coverage (50.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #7997      +/-   ##
==========================================
- Coverage   58.89%   58.89%   -0.01%     
==========================================
  Files         658      658              
  Lines       35027    35043      +16     
==========================================
+ Hits        20629    20638       +9     
- Misses      14398    14405       +7     

Files with missing lines	Coverage Δ
gcloud/periodictask/signals/handlers.py	59.37% <33.33%> (-2.70%)	⬇️
gcloud/core/trace.py	92.98% <25.00%> (-5.14%)	⬇️

... and 5 files with indirect coverage changes

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