The stack trace is missing when an exception is thrown.

[axel584]

Hi,
I'm using datadog and collect span with some intrumentation (httpx, wsgi), but when an exception is raised, the stacktrace is missing in datadog.
I looked at the instrumentation code and saw that the command span.record_exception(exception) was missing here:

opentelemetry-python-contrib/instrumentation/opentelemetry-instrumentation-httpx/src/opentelemetry/instrumentation/httpx/__init__.py

Line 875 in 5a15f57

if exception:

            if exception:
                if span.is_recording() and _report_new(
                    self._sem_conv_opt_in_mode
                ):
                    span.set_attribute(
                        ERROR_TYPE, type(exception).__qualname__
                    )
                    metric_attributes[ERROR_TYPE] = type(
                        exception
                    ).__qualname__

                raise exception.with_traceback(exception.__traceback__)

What do you think? I'm not a coding expert, but if it seems relevant to you, I'd be happy to submit a pull request.

Thanks a lot,

Axel