Replace custom opencensus sematic conventions with otel semantic conventions

[bogdandrutu]

Signed-off-by: Bogdan Drutu [email protected]

[codecov]

Codecov Report

Merging #2552 (d91f657) into main (3e138d7) will increase coverage by 0.14%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main    #2552      +/-   ##
==========================================
+ Coverage   91.89%   92.03%   +0.14%     
==========================================
  Files         270      270              
  Lines       15420    15425       +5     
==========================================
+ Hits        14170    14197      +27     
+ Misses        868      847      -21     
+ Partials      382      381       -1     

Impacted Files	Coverage Δ
internal/goldendataset/span_generator.go	98.30% <100.00%> (+0.01%)	⬆️
translator/internaldata/oc_to_resource.go	100.00% <100.00%> (ø)
translator/internaldata/oc_to_traces.go	90.21% <100.00%> (+3.87%)	⬆️
translator/internaldata/resource_to_oc.go	93.93% <100.00%> (ø)
translator/internaldata/traces_to_oc.go	93.86% <100.00%> (+7.07%)	⬆️
translator/trace/zipkin/zipkinv2_to_traces.go	89.87% <100.00%> (ø)

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