Python Example is Outdated

[fvaliquette-splunk]

requirements.txt lists splunk-opentelemetry but it should be splunk-opentelemetry[all] as mentioned in Spluk official doc.

When not using [all], with default settings, we get below error.

ValueError: exporter "otlp (otlp_proto_grpc)" not found. please make sure opentelemetry-exporter-otlp-proto-grpc is installed

[billg-splunk]

Is there anything holding up this change?

Would be good to know if there is a reason not to use splunk-opentelemetry[all] in certain situations.

[pmcollins]

I'm not sure why otlp was put behind a Python extra. The next major version of Splunk Otel Python will include it by default unless we discover a reason not to.

In the meantime, I've opened this PR for adding [all] to the requirements file for the example.

[billg-splunk]

Appreciate it Pablo!

[pmcollins]

Completed, closing.