Allow setting the otel runtime per input type

[swiatekm]

What does this PR do?

Why is it important?

Checklist

• I have read and understood the pull request guidelines of this project.
• My code follows the style guidelines of this project
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have made corresponding change to the default configuration files
• I have added tests that prove my fix is effective or that my feature works
• I have added an entry in ./changelog/fragments using the changelog tool
• I have added an integration test or an E2E test

How to test this PR locally

Build agent locally and try playing around with the settings in the following config file:

agent:
  logging:
    to_stderr: true
  internal:
    runtime:
      default: otel
      filestream: process
inputs:
- id: filestream-filebeat
  type: filestream
  paths:
  - /tmp/nonexistent1
  prospector.scanner.fingerprint.enabled: false
  file_identity.native: ~
  use_output: default
- data_stream:
    namespace: default
  id: unique-system-metrics-input
  streams:
  - data_stream:
      dataset: system.cpu
    metricsets:
    - cpu
  type: system/metrics
  use_output: default
outputs:
  default:
    username: elastic
    password:
    hosts:
    - 127.0.0.1:9200
    type: elasticsearch

Related issues

• Relates https://github.com/elastic/ingest-dev/issues/5567

[mergify]

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

• backport-./d./d is the label that automatically backports to the 8./d branch. /d is the digit
• backport-active-all is the label that automatically backports to all active branches.
• backport-active-8 is the label that automatically backports to all active minor branches for the 8 major.
• backport-active-9 is the label that automatically backports to all active minor branches for the 9 major.

[elasticmachine]

💛 Build succeeded, but was flaky

• Buildkite Build
• Commit: 565b073

Failed CI Steps

• Unit tests - Windows 2016
• Win2022:sudo:fleet
• x86_64:sudo: default
• arm:sudo: fleet
• x86_64:sudo: default - platform-ingest-elastic-agent-debian-13-1762801856

History

• 💔 Build #30338 failed 59b8824

cc @swiatekm