[aws-resources] link xray traces to cloudwatch logs - Populate aws.log.group.names in resource detectors

[rapphil]

Is your feature request related to a problem? Please describe.

aws.log.group.names is used to link Xray traces to cloudwatch logs.

Right now no resource detector is populating this resource attribute.

Describe the solution you'd like

I would like that each resource detector to populate the aws.log.group.names using a stable approach (i.e.: does not rely on weak conventions).

Describe alternatives you've considered

Here we have an example of implementation that had to be abandoned because is based on weak conventions: #533

Additional context

• Xray sdk implementation: https://github.com/aws/aws-xray-sdk-java/blob/ad01b469f9a2560ea9ab84f79a61604581ea81ac/aws-xray-recorder-sdk-core/src/main/java/com/amazonaws/xray/plugins/EKSPlugin.java#L105-L116
• https://opentelemetry.io/docs/reference/specification/resource/semantic_conventions/cloud_provider/aws/logs/

Related Items:

• Add support to attributes with array values in processors that manipulate attributes opentelemetry-collector-contrib#14782
• Provide clarity on how non-string attributes are supposed to be provided through OTEL_RESOURCE_ATTRIBUTES opentelemetry-specification#2857
• XRay traces not connected to log entries in Cloudwatch aws-observability/aws-otel-java-instrumentation#205

[rapphil]

Closing issue as it is not possible to create resource attributes that reliable detect log groups across all environments.