Move PCF metricset to GA

[masci]

Integration release checklist

This checklist is intended for integrations maintainers to ensure consistency
when creating or updating a Package, Module or Dataset for an Integration.

Blocked on

• Refactor Cloud Foundry metrics collection #557
• Add integration tests for Cloud Foundry #556

All changes

• Change follows the contributing guidelines
• Supported versions of the monitoring target are documented
• Supported operating systems are documented (if applicable)
• Integration or System tests exist
• Documentation exists
• Fields follow ECS and naming conventions
• At least a manual test with ES / Kibana / Agent has been performed.
• Required Kibana version set to:

Metric dataset changes

This entry is currently only recommended. It will be mandatory once we provide better support for it.

• Sample event (sample_event.json) exists

Metricbeat module changes

• Example data.json exists and an automated way to generate it exists (go test -data)
• Test environment in Docker exist for integration tests

[elasticmachine]

Pinging @elastic/integrations (Team:Integrations)

[botelastic]

Hi! We just realized that we haven't looked into this issue in a while. We're sorry! We're labeling this issue as Stale to make it hit our filters and make sure we get back to it as soon as possible. In the meantime, it'd be extremely helpful if you could take a look at it as well and confirm its relevance. A simple comment with a nice emoji will be enough :+1. Thank you for your contribution!