disable spring cloud discovery when running test to speed up test pro…

[wutingjia]

What's the purpose of this PR

disable spring cloud discovery when running test to speed up test process and reduce error log

Which issue(s) this PR fixes:

Fixes #4603

Brief changelog

disable spring cloud discovery when running test to speed up test process and reduce error log

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• Read the Contributing Guide before making this pull request.
• Write a pull request description that is detailed enough to understand what the pull request does, how, and why.
• Write necessary unit tests to verify the code.
• Run mvn clean test to make sure this pull request doesn't break anything.
• Update the CHANGES log.

[github-actions]

CLA Assistant Lite bot All contributors have signed the CLA ✍️ ✅

[codecov]

Codecov Report

Merging #4604 (83fc8f0) into master (25fa47f) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master    #4604   +/-   ##
=========================================
  Coverage     46.40%   46.40%           
+ Complexity     1565     1563    -2     
=========================================
  Files           331      331           
  Lines         10360    10360           
  Branches       1043     1043           
=========================================
  Hits           4808     4808           
- Misses         5254     5255    +1     
+ Partials        298      297    -1     

Impacted Files	Coverage Δ
...rk/apollo/biz/eureka/ApolloEurekaClientConfig.java	57.14% <0.00%> (-7.15%)	⬇️
...m/ctrip/framework/apollo/biz/config/BizConfig.java	35.71% <0.00%> (-3.58%)	⬇️
...work/apollo/biz/message/DatabaseMessageSender.java	56.25% <0.00%> (+6.25%)	⬆️

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[wutingjia]

I have read the CLA Document and I hereby sign the CLA

[wutingjia]

recheck

[Anilople]

LGTM