Expose the OTLP HTTP port in the distributor service

[andreasgerstmayr]

Required e.g. for running the hotrod example application

$ docker run --network=host -e OTEL_EXPORTER_OTLP_ENDPOINT=http://tempo-simplest-distributor.default.svc.cluster.local:4318 jaegertracing/example-hotrod:1.46 all --otel-exporter=otlp

[codecov-commenter]

Codecov Report

Patch coverage: 100.00% and project coverage change: +0.05% 🎉

Comparison is base (de2a529) 78.20% compared to head (e83f625) 78.25%.
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #610      +/-   ##
==========================================
+ Coverage   78.20%   78.25%   +0.05%     
==========================================
  Files          64       64              
  Lines        4781     4792      +11     
==========================================
+ Hits         3739     3750      +11     
  Misses        864      864              
  Partials      178      178              

Flag	Coverage Δ
unittests	78.25% <100.00%> (+0.05%)	⬆️

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Files Changed	Coverage Δ
internal/manifests/distributor/distributor.go	94.52% <100.00%> (+0.28%)	⬆️

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[frzifus]

Oui :D