[E2E] Fix flaky udf manage e2e test

[SbloodyS]

Purpose of the pull request

https://github.com/apache/dolphinscheduler/runs/4963908433?check_suite_focus=true

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 44.97%. Comparing base (07a15b7) to head (a1124a8).
⚠️ Report is 3044 commits behind head on dev.

Additional details and impacted files

@@             Coverage Diff              @@
##                dev    #8232      +/-   ##
============================================
- Coverage     44.99%   44.97%   -0.03%     
+ Complexity     3955     3953       -2     
============================================
  Files           672      672              
  Lines         26218    26218              
  Branches       2826     2826              
============================================
- Hits          11798    11791       -7     
- Misses        13292    13302      +10     
+ Partials       1128     1125       -3     

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[caishunfeng]

+1

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

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