【test】Replenish the UT for spring registry plugin

[justforstudy-A]

What type of PR is this?

/test

Which issue(s) this PR fixes:

Fixes #737 Add UT for registry plugin Only

Use case description: Replenish the UT for spring registry plugin

Does this PR introduce a user-facing change?

No

Additional documentation e.g., usage docs, etc.:

No

[codecov-commenter]

Codecov Report

Merging #736 (d7eff2d) into develop (c0ea065) will increase coverage by 3.64%. The diff coverage is 0.00%.

@@              Coverage Diff              @@
##             develop     #736      +/-   ##
=============================================
+ Coverage      26.42%   30.06%   +3.64%     
- Complexity      1574     1790     +216     
=============================================
  Files            617      617              
  Lines          13438    13436       -2     
  Branches        1482     1482              
=============================================
+ Hits            3551     4040     +489     
+ Misses          9440     8874     -566     
- Partials         447      522      +75     

Flag	Coverage Δ
unittests	30.06% <0.00%> (+3.64%)	:arrow_up:

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...y/interceptors/health/ConsulHealthInterceptor.java	76.31% <0.00%> (+76.31%)	:arrow_up:
...wei/registry/service/register/RegisterManager.java	56.75% <ø> (+10.41%)	:arrow_up:
...ant/core/service/tracing/sender/TracingSender.java	68.25% <0.00%> (+4.76%)	:arrow_up:
...awei/registry/auto/sc/ServiceCombRegistration.java	70.00% <0.00%> (+10.00%)	:arrow_up:
...huawei/registry/support/RegisterSwitchSupport.java	66.66% <0.00%> (+11.11%)	:arrow_up:
...try/config/RegistryConfigSubscribeServiceImpl.java	18.18% <0.00%> (+18.18%)	:arrow_up:
...m/huawei/registry/service/register/ScRegister.java	26.66% <0.00%> (+18.33%)	:arrow_up:
...main/java/com/huawei/registry/utils/ZoneUtils.java	100.00% <0.00%> (+27.27%)	:arrow_up:
.../huawei/registry/config/RegisterDynamicConfig.java	100.00% <0.00%> (+28.57%)	:arrow_up:
... and 37 more

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