fix(tianmu):issue1090.test occasionally fails to run(#1234)

[konghaiya]

Cause of the problem:
There is a problem in the method of waiting for the master/slave synchronization to complete, which leads to the data not being synchronized, and then proceed to the next step

Modify scheme:
Use the correct method to determine whether the slave database is synchronized

Summary about this PR

Issue Number: close #1234

Tests Check List

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No code

Changelog

• New Feature
• Bug Fix
• Performance Improvement
• Build/Testing/CI/CD
• Documentation
• Not for changelog (changelog entry is not required)

Documentation

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features

[mergify]

Thanks for the contribution!
I have applied any labels matching special text in your PR Changelog.

Please review the labels and make any necessary changes.

[lujiashun]

Great， LGTM

[codecov]

Codecov Report

Base: 43.34% // Head: 43.13% // Decreases project coverage by -0.21% ⚠️

Coverage data is based on head (fffad04) compared to base (ad4e0fa).
Patch coverage: 64.73% of modified lines in pull request are covered.

❗ Current head fffad04 differs from pull request most recent head b714ee6. Consider uploading reports for the commit b714ee6 to get more accurate results

Additional details and impacted files

@@                 Coverage Diff                 @@
##           stonedb-5.7-dev    #1314      +/-   ##
===================================================
- Coverage            43.34%   43.13%   -0.21%     
===================================================
  Files                 1830     1830              
  Lines               396171   396311     +140     
===================================================
- Hits                171706   170960     -746     
- Misses              224465   225351     +886     

Impacted Files	Coverage Δ
sql/sql_derived.cc	95.89% <ø> (+1.36%)	⬆️
sql/sql_lex.h	53.06% <ø> (ø)
sql/sql_optimizer.h	74.54% <ø> (ø)
sql/sql_select.h	73.27% <ø> (ø)
sql/table.h	55.00% <ø> (ø)
storage/tianmu/core/aggregation_algorithm.h	60.00% <ø> (+22.50%)	⬆️
storage/tianmu/core/engine.cpp	56.87% <0.00%> (-0.36%)	⬇️
storage/tianmu/core/engine.h	30.43% <ø> (ø)
storage/tianmu/core/pack_guardian.h	100.00% <ø> (ø)
storage/tianmu/core/temp_table.cpp	71.71% <ø> (ø)
... and 113 more

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[RingsC]

LGTM