trace support for pixiu

[maxingg]

Provide scalable trace support for pixiu, which developers can use to customize multiple exporters to collect data, and the flexibility to trace requests for multiple protocols. In addition, go version in .travis.yml has been upgraded to 1.17.:

Which issue(s) this PR fixes:

Fixes #376

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

Yes. Trace configuration in conf.yaml includes exporter name and detailed configuration, sampling policy, etc. You can start the relevant container in docker-compose.yaml, and later encode it in the component to trace the request, or choose to customize the trace for a certain protocol.

[maxingg]

@AlexStocks 已更改

[codecov-commenter]

Codecov Report

Merging #394 (f507cbc) into develop (d213568) will decrease coverage by 0.38%.
The diff coverage is 0.00%.

@@             Coverage Diff             @@
##           develop     #394      +/-   ##
===========================================
- Coverage    37.00%   36.61%   -0.39%     
===========================================
  Files           55       55              
  Lines         3616     3654      +38     
===========================================
  Hits          1338     1338              
- Misses        2126     2164      +38     
  Partials       152      152              

Impacted Files	Coverage Δ
pkg/client/dubbo/dubbo.go	18.83% <0.00%> (-0.64%)	⬇️
pkg/common/http/manager.go	44.59% <0.00%> (ø)
pkg/server/otel.go	0.00% <0.00%> (ø)
pkg/server/pixiu_start.go	3.44% <0.00%> (-0.33%)	⬇️

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[PhilYue]

@PhilYue