Added changelog for apm-data upgrade to 1.1

[JonasKunz]

Motivation/summary

Checklist

• Update CHANGELOG.asciidoc
• Documentation has been updated

How to test these changes

• Map new telemetry distro attributes to agent fields for OTel distros apm-data#200:
  • spin up any test application with any OTel-agent
  • Add telemetry.distro.name and telemetry.distro.version as resource-attributes. E.g. use the environment variable OTEL_RESOURCE_ATTRIBUTES=telemetry.distro.name=mydistro,telemetry.distro.version=myversion
  • Verify that the resulting traces (or metrics) have agent.name set to opentelemetry/<language>/mydistro and agent.version is myversion
  • Alternative: Directly send dummy data to the OTLP intake with those resource attributes set
• Allow host.id via IntakeV2 metadata apm-data#187
  • Use existing dummy data for an IntakeV2 request for generating a transaction
  • Add system.host_id with a value (e.g. foobar) to the metdata-json
  • verify that the resulting transaction now has host.id set to foobar

Related issues

elastic/apm-data#200
elastic/apm-data#187

[mergify]

This pull request does not have a backport label. Could you fix it @JonasKunz? 🙏
To fixup this pull request, you need to add the backport labels for the needed
branches, such as:

• backport-7.17 is the label to automatically backport to the 7.17 branch.
• backport-8./d is the label to automatically backport to the 8./d branch. /d is the digit.

NOTE: backport-skip has been added to this pull request.