tests: add store limit test

[rleungx]

What problem does this PR solve?

Issue Number: Ref #5839.

What is changed and how does it work?

This PR adds a store limit test for scheduling service to make sure it works.

Check List

Tests

• Unit test

Release note

None.

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• JmPotato
• nolouch

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[codecov]

Codecov Report

Merging #7214 (f28019b) into master (4176c1d) will increase coverage by 0.11%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #7214      +/-   ##
==========================================
+ Coverage   74.59%   74.70%   +0.11%     
==========================================
  Files         442      442              
  Lines       47744    47744              
==========================================
+ Hits        35614    35667      +53     
+ Misses       8987     8933      -54     
- Partials     3143     3144       +1     

Flag	Coverage Δ
unittests	74.70% <ø> (+0.11%)	⬆️

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[nolouch]

/merge

[ti-chi-bot]

@nolouch: It seems you want to merge this PR, I will help you trigger all the tests:

/run-all-tests

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[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Commit hash: f28019b