[cloudflare] Add health check to mock service

[chrisberkhout]

Proposed commit message

[cloudflare] Add health check to mock service

Adds a health check to the mock service used in the `logpull` system
test. This will let docker check when the mock service is ready and
avoid starting the test too early.

The system test `interval` setting is lowered from `1h` to `2m`, which
may also help avoid test failures.

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.

Related issues

• Closes [Stack 8.16.0-SNAPSHOT] [cloudflare] Failing test daily: system test: default in cloudflare.logpull #10619

[elastic-vault-github-plugin-prod]

🚀 Benchmarks report

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[efd6]

Thank you for fixing this. One query that needs to be decided.

[elasticmachine]

💚 Build Succeeded

• Buildkite Build
• Commit: c5b185e

History

• 💚 Build #16729 succeeded 465c3ab

cc @chrisberkhout

[elastic-sonarqube]

Quality Gate passed

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