Added Lineage Support to XRay Propagator using W3CBaggage #6699
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Leaving this PR as a draft Lambda has confirmed they are ready for this change across all OTel SDKs. Please review in the meantime.
This change is apart of an ongoing project for all of OpenTelemetry language SDKs to be moved towards support for the Lambda Lineage attribute in the X-Ray trace header via W3C Baggage. See open-telemetry/opentelemetry-java-contrib#1671 for the equivalent Java solution. This PR updates X-Ray propagator to pass lineage into baggage and inject it into outgoing X-Ray trace header.
Use of XRay Propagator will require customers to turn on both xray and baggage propagators in the environment variable (propagator,xray)