[Improve] Improve support test tasks UT

[insist777]

Purpose of the pull request

close #12061

Brief change log

Verify this pull request

This pull request is code cleanup without any test coverage.

(or)

This pull request is already covered by existing tests, such as (please describe tests).

(or)

This change added tests and can be verified as follows:

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If your pull request contain incompatible change, you should also add it to docs/docs/en/guide/upgrede/incompatible.md

[codecov-commenter]

Codecov Report

Merging #12062 (edc68ee) into dev (e1b55db) will decrease coverage by 0.00%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##                dev   #12062      +/-   ##
============================================
- Coverage     38.65%   38.64%   -0.01%     
+ Complexity     4004     4001       -3     
============================================
  Files          1002     1002              
  Lines         37215    37184      -31     
  Branches       4251     4243       -8     
============================================
- Hits          14386    14371      -15     
+ Misses        21195    21179      -16     
  Partials       1634     1634              

Impacted Files	Coverage Δ
...er/master/dispatch/host/assign/RandomSelector.java	77.77% <0.00%> (-5.56%)	⬇️
...org/apache/dolphinscheduler/remote/utils/Host.java	42.55% <0.00%> (-2.13%)	⬇️
...dolphinscheduler/remote/future/ResponseFuture.java	81.96% <0.00%> (-1.64%)	⬇️
...e/dolphinscheduler/remote/NettyRemotingClient.java	51.42% <0.00%> (-1.43%)	⬇️
...r/plugin/task/sqoop/parameter/SqoopParameters.java	55.12% <0.00%> (-1.29%)	⬇️
...rver/master/runner/task/BlockingTaskProcessor.java	75.86% <0.00%> (-0.55%)	⬇️
...heduler/api/service/impl/ResourcesServiceImpl.java	51.68% <0.00%> (-0.47%)	⬇️
...eduler/api/service/impl/DataSourceServiceImpl.java	29.14% <0.00%> (ø)
...cheduler/server/master/utils/DependentExecute.java	0.00% <0.00%> (ø)
.../dolphinscheduler/plugin/task/datax/DataxTask.java	0.00% <0.00%> (ø)
... and 12 more

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[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

46.2% Coverage
0.0% Duplication

[EricGao888]

I've tested locally. It works.

[SbloodyS]

+1

[EricGao888]

Actually, CI may not run some cases in this test class because there are both jUnit4 and jUnit5 style cases. And this kind of problem also exists in other 33 files. It looks like although we haven't add explicit dependency of jUnit5 yet, both versions of test cases have existed in DS project for a long time. Maybe we have some transitive dependencies on jUnit5 in this project.

But this is out of the scope of this PR. I will handle them when doing DSIP-10 #10573

cc @SbloodyS @caishunfeng @ruanwenjun