[Kibana] Make condition option available in http metricset

[ckauf]

Proposed commit message

Expose Condition in UI to allow dynamically enabling/disabling data collection for HTTP Metrics. This option is already available in the Stack Monitoring metricset

Checklist

• I have reviewed tips for building integrations and this pull request is aligned with them.
• I have verified that all data streams collect metrics or logs.
• I have added an entry to my package's changelog.yml file.
• I have verified that Kibana version constraints are current according to guidelines.

How to test this PR locally

Add a valid condition to the integration and check if data collection is/is not enabled, e.g. ${host.platform} == "windows" on a linux host should not enable the input.

Screenshots

[elastic-vault-github-plugin-prod]

🚀 Benchmarks report

To see the full report comment with /test benchmark fullreport

[elasticmachine]

💚 Build Succeeded

• Buildkite Build
• Commit: 236138b