We should implement baggage support in the OT shim: https://github.com/open-telemetry/opentelemetry-python/blob/26d56c0e27b82b559b492f5ef011f291094f0c3c/ext/opentelemetry-ext-opentracing-shim/src/opentelemetry/ext/opentracing_shim/__init__.py#L37-L43 https://github.com/open-telemetry/opentelemetry-python/blob/26d56c0e27b82b559b492f5ef011f291094f0c3c/ext/opentelemetry-ext-opentracing-shim/src/opentelemetry/ext/opentracing_shim/__init__.py#L80-L92