Service Name Mapping

[mark4z]

What this PR does:
#485
Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:
Still some leftovers to do, but mostly usable
Does this PR introduce a user-facing change?:

[codecov-commenter]

Codecov Report

Merging #526 (6b7ff6f) into develop (9db643e) will decrease coverage by 0.37%.
The diff coverage is 70.18%.

@@             Coverage Diff             @@
##           develop     #526      +/-   ##
===========================================
- Coverage    55.13%   54.75%   -0.38%     
===========================================
  Files          667      667              
  Lines        79061    78131     -930     
===========================================
- Hits         43590    42781     -809     
+ Misses       31784    31701      -83     
+ Partials      3687     3649      -38     

Impacted Files	Coverage Δ
pilot/pkg/model/push_context.go	57.03% <34.14%> (-5.81%)	⬇️
...working/dubbo/v1alpha1/servicenamemappingserver.go	69.51% <69.51%> (-6.12%)	⬇️
pilot/pkg/config/kube/crdclient/types.gen.go	79.56% <95.74%> (-2.35%)	⬇️
pilot/pkg/bootstrap/server.go	53.44% <100.00%> (-9.38%)	⬇️
pilot/pkg/xds/ads.go	72.90% <100.00%> (-0.87%)	⬇️
pilot/pkg/xds/discovery.go	85.98% <100.00%> (-2.06%)	⬇️
security/pkg/credentialfetcher/fetcher.go	40.00% <0.00%> (-20.00%)	⬇️
pkg/channels/unbounded.go	95.83% <0.00%> (-4.17%)	⬇️
... and 14 more

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
1 Code Smell

No Coverage information
4.3% Duplication

[AlexStocks]

远云近期还在写文档，大概下下周可以抽时间测试这个 pr

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
No Duplication information