[Improvement] Test DataSource connection return msg may not internati…

[tracehh]

…onalization

Purpose of the pull request

Brief change log

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This pull request is code cleanup without any test coverage.

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[codecov-commenter]

Codecov Report

Merging #13767 (934fe7d) into dev (1ac76e1) will decrease coverage by 0.06%.
The diff coverage is 0.00%.

❗ Current head 934fe7d differs from pull request most recent head 3405fc9. Consider uploading reports for the commit 3405fc9 to get more accurate results

@@             Coverage Diff              @@
##                dev   #13767      +/-   ##
============================================
- Coverage     39.03%   38.98%   -0.06%     
+ Complexity     4448     4442       -6     
============================================
  Files          1133     1133              
  Lines         42352    42352              
  Branches       4792     4792              
============================================
- Hits          16533    16509      -24     
- Misses        23992    24019      +27     
+ Partials       1827     1824       -3     

Impacted Files	Coverage Δ
...eduler/api/service/impl/DataSourceServiceImpl.java	50.45% <0.00%> (ø)

... and 4 files with indirect coverage changes

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[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

0.0% Coverage
0.0% Duplication

[caishunfeng]

LGTM