[k8sattributes processor] Add container metadata #5467
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This change provides an option to fetch container metadata from k8s API in addition to k8s pod metadata. The following attributes now can be automatically added by the k8sattributes processor: - container.image.name - container.image.tag - container.id `container.image.name` and `container.image.tag` require additional container identifier present in resource attributes: `container.name`. `container.id` requires additional container run identifiers present in resource attributes: `container.name` and `run_id`. `run_id` identified is a subject to change, see open-telemetry/opentelemetry-specification#1945
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Description:
This change provides an option to fetch container metadata from k8s API in addition to k8s pod metadata. The following attributes now can be automatically added by the k8sattributes processor:
container.image.nameandcontainer.image.tagrequire additional container identifier present in resource attributes:container.name.container.idrequires additional container run identifiers present in resource attributes:container.nameandrun_id.run_ididentified is a subject to change, see open-telemetry/opentelemetry-specification#1945Link to tracking Issue: #5235
Testing: Unit tests + manual validation
Documentation: Added docs