[SCB-2813]normalize health and metrics endpoint

[liubao68]

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[codecov-commenter]

Codecov Report

Merging #3997 (e6882f5) into master (429a57a) will increase coverage by 0.00%.
The diff coverage is 100.00%.

❗ Current head e6882f5 differs from pull request most recent head 34bab47. Consider uploading reports for the commit 34bab47 to get more accurate results

@@            Coverage Diff            @@
##             master    #3997   +/-   ##
=========================================
  Coverage     43.67%   43.67%           
+ Complexity     5374     5366    -8     
=========================================
  Files          1394     1393    -1     
  Lines         34402    34385   -17     
  Branches       3353     3353           
=========================================
- Hits          15025    15018    -7     
+ Misses        18161    18144   -17     
- Partials       1216     1223    +7     

Files	Coverage Δ
...he/servicecomb/demo/springmvc/SpringmvcClient.java	82.35% <100.00%> (ø)
...b/foundation/metrics/health/HealthCheckResult.java	0.00% <ø> (ø)
.../servicecomb/metrics/core/MetricsBootListener.java	88.88% <ø> (+9.94%)	⬆️
...icecomb/metrics/core/MetricsCoreConfiguration.java	100.00% <100.00%> (ø)
...solution/basic/integration/HealthEndpointImpl.java	12.50% <100.00%> (ø)
...solution/basic/integration/HealthInstancePing.java	50.00% <ø> (ø)
...ion/basic/integration/InstanceOpenAPIRegistry.java	57.50% <ø> (ø)
...on/basic/integration/IntegrationConfiguration.java	100.00% <100.00%> (ø)
...tion/basic/integration/ManagementEndpointImpl.java	25.00% <ø> (ø)
...olution/basic/integration/MetricsEndpointImpl.java	11.11% <100.00%> (ø)

... and 13 files with indirect coverage changes

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