feat(opentracing-shim): Map OpenTracing span.kind tag to OTel SpanKind

[cabaret-pro]

Summary

• Maps the OpenTracing span.kind tag to the OpenTelemetry SpanKind argument when creating spans via the shim
• Adds a helper function opentracing_kind_to_otel_kind() in util.py with a constant mapping for CLIENT, SERVER, CONSUMER, and PRODUCER kinds
• Preserves the span.kind tag in span attributes (shim does not modify user data)

Fixes #2549

Changes

• util.py: Added _OPENTRACING_TO_OTEL_KIND constant and opentracing_kind_to_otel_kind() function
• __init__.py: Modified start_span() to extract and convert the span.kind tag
• Added unit tests for the mapping function and integration tests for span kind behavior
• Updated CHANGELOG.md

Test Plan

• python3 -m pytest shim/opentelemetry-opentracing-shim/tests/ -v - All 61 tests pass
• tox -e precommit - All formatters/linters pass

Made with Cursor

[cabaret-pro]

The failing Core Contrib Test jobs (instrumentation-grpc-0 and processor-baggage) appear to be infrastructure issues unrelated to this PR. The tests are failing because they're trying to resolve dependencies from a non-existent git commit hash (a4f96df6913842d26a103f909a4206b3ab59a6f6).

All other checks are passing, including:

• changelog
• precommit checks (ruff, ruff-format)
• EasyCLA
• All other contrib tests (100+ passing)

[cabaret-pro]

Update on CI failures:

After further investigation, the Core Contrib Test failures are expected for external contributor PRs. The CI is trying to install dependencies from:

git+https://github.com/open-telemetry/opentelemetry-python.git@fab489d6...

But commit fab489d6 only exists in my fork (cabaret-pro/opentelemetry-python), not in the upstream repo yet. These tests will pass once the PR is merged to main.

All tests that can be run against the fork are passing.

[xrmx]

@cabaret-pro thanks for the PR, do you need this or are you going through issues to find something to fix?

[cabaret-pro]

Mainly looking through issues but happy to work on something that's actively impacting.