Const ExperimentalCloudFoundry defines the instance_id in the Loggregator v2 envelope.
It is used for logs and metrics emitted by CloudFoundry. It is
supposed to contain the vm id for CloudFoundry components.
When system components are instrumented, values from the
Bosh spec
should be used. The system.instance.id should be set to spec.id.
This attribute is experimental and is subject to breaking changes in minor releases of @opentelemetry/semantic-conventions.
A guid describing the concrete instance of the event source.