Honor the sampling flag in traceparent header for OpenTelemetry tracing #8474
Description
Is your feature request related to a problem? Please describe.
When using OpenTelemetry tracing, Triton currently ignores the sampling flag ("sampled" bit) in the W3C traceparent header. This means that even when a client sets the sampling flag to 0 (not sampled), Triton will still record and export traces for those requests.
Describe the solution you'd like
Triton reads the sampled flag in the traceparent and stops sending spans for not sampled traces.
Describe alternatives you've considered
The client could stop the tracing propagation when it calls Triton from a not sampled trace but this can be tricky because clients are usually auto-instrumented. Additionally, this is not the OpenTelemetry way. You want to propagate the tracing context even if the trace is not sampled, for example to be able to include the trace id in the logs.
Additional context