[SCB-2678]migrate inspector to mockito

[fu-turer]

No description provided.

[codecov-commenter]

Codecov Report

Merging #3316 (471127a) into master (acf54d5) will decrease coverage by 0.02%.
The diff coverage is 100.00%.

@@             Coverage Diff              @@
##             master    #3316      +/-   ##
============================================
- Coverage     77.40%   77.38%   -0.03%     
  Complexity     1452     1452              
============================================
  Files          1650     1650              
  Lines         43732    43736       +4     
  Branches       3675     3675              
============================================
- Hits          33852    33845       -7     
- Misses         8352     8362      +10     
- Partials       1528     1529       +1     

Impacted Files	Coverage Δ
...e/servicecomb/core/transport/TransportManager.java	96.22% <100.00%> (+0.07%)	⬆️
...ache/servicecomb/registry/RegistrationManager.java	88.43% <100.00%> (+0.15%)	⬆️
.../servicecomb/inspector/internal/InspectorImpl.java	97.60% <100.00%> (+0.01%)	⬆️
...thentication/consumer/RSAConsumerTokenManager.java	70.96% <0.00%> (-6.46%)	⬇️
.../servicecomb/registry/discovery/DiscoveryTree.java	96.49% <0.00%> (-3.51%)	⬇️
...mb/serviceregistry/client/http/RestClientUtil.java	78.50% <0.00%> (-1.87%)	⬇️
...egistry/client/http/ServiceRegistryClientImpl.java	70.17% <0.00%> (-1.15%)	⬇️
...mb/config/ConfigCenterConfigurationSourceImpl.java	9.57% <0.00%> (-1.07%)	⬇️
...mb/metrics/core/meter/os/cpu/AbstractCpuUsage.java	100.00% <0.00%> (+11.11%)	⬆️

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