enhance: Limit import job number (#36891)

[bigsheeper]

issue: #36890

pr: #36891

[mergify]

@bigsheeper E2e jenkins job failed, comment /run-cpu-e2e can trigger the job again.

[codecov]

Codecov Report

Attention: Patch coverage is 97.50000% with 1 line in your changes missing coverage. Please review.

Project coverage is 83.83%. Comparing base (2742524) to head (6b0a2b1).
Report is 3 commits behind head on 2.4.

Files with missing lines	Patch %	Lines
internal/datacoord/services.go	90.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##              2.4   #36892      +/-   ##
==========================================
+ Coverage   80.63%   83.83%   +3.20%     
==========================================
  Files        1065      798     -267     
  Lines      164519   138468   -26051     
==========================================
- Hits       132652   116082   -16570     
+ Misses      27523    18056    -9467     
+ Partials     4344     4330      -14     

Files with missing lines	Coverage Δ
internal/datacoord/import_job.go	100.00% <100.00%> (ø)
internal/datacoord/import_meta.go	95.09% <100.00%> (+1.46%)	⬆️
pkg/util/paramtable/component_param.go	98.33% <100.00%> (+<0.01%)	⬆️
internal/datacoord/services.go	84.89% <90.00%> (+0.30%)	⬆️

... and 294 files with indirect coverage changes

[czs007]

/approve
/lgtm

[sre-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: bigsheeper, czs007

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• internal/datacoord/OWNERS [czs007]
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