[ISSUE #3879] Logger of slf4j does not work in eventmesh-common test module

[pandaapo]

Fixes #3879.

Motivation

The object of org.slf4j.Logger can not execute no matter log.info, log.error and so on in test.

Modifications

Add log4j2.xml to eventmesh-common test module

Documentation

• Does this pull request introduce a new feature? no

[codecov]

Codecov Report

Merging #3882 (7dcee91) into master (0ce8d57) will decrease coverage by 0.30%.
The diff coverage is n/a.

❗ Current head 7dcee91 differs from pull request most recent head 577dd90. Consider uploading reports for the commit 577dd90 to get more accurate results

@@             Coverage Diff              @@
##             master    #3882      +/-   ##
============================================
- Coverage     14.24%   13.94%   -0.30%     
+ Complexity     1320     1291      -29     
============================================
  Files           579      570       -9     
  Lines         28967    28847     -120     
  Branches       2802     2811       +9     
============================================
- Hits           4125     4024     -101     
  Misses        24450    24450              
+ Partials        392      373      -19     

see 145 files with indirect coverage changes

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[Alonexc]

LGTM

[Pil0tXia]

Can we only add a xml configuration file under this module? This PR #4719 proposes an alternative way to manage the Slf4j dependency, and let's looking forward to it.