[Reporting] Download report: add debug logging around sending of 5xx codes

[tsullivan]

Summary

These logs help correlate errors one may see from investigating HTTP 5xx status codes that are sent in response to the Download Report API.

Related to: #183846

[elasticmachine]

Pinging @elastic/appex-sharedux (Team:SharedUX)

[kibana-ci]

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• Commit: a73c051

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✅ unchanged

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@elasticmachine merge upstream

[rshen91]

 proc [kibana] [2024-05-20T14:21:23.327-06:00][DEBUG][plugins.reporting.download-report] Report job 2e8e9914-cc44-45e2-ba77-3ac0f01328f1 is processing. Sending statusCode: 503 {"service":{"node":{"roles":["background_tasks","ui"]}}}
 proc [kibana] [2024-05-20T14:21:23.883-06:00][DEBUG][plugins.reporting.download-report] Report job 2e8e9914-cc44-45e2-ba77-3ac0f01328f1 is processing. Sending statusCode: 503 {"service":{"node":{"roles":["background_tasks","ui"]}}}
 proc [kibana] [2024-05-20T14:21:24.426-06:00][DEBUG][plugins.reporting.download-report] Report job 2e8e9914-cc44-45e2-ba77-3ac0f01328f1 is processing. Sending statusCode: 503 {"service":{"node":{"roles":["background_tasks","ui"]}}}
 proc [kibana] [2024-05-20T14:21:24.981-06:00][DEBUG][plugins.reporting.download-report] Report job 2e8e9914-cc44-45e2-ba77-3ac0f01328f1 is processing. Sending statusCode: 503 {"service":{"node":{"roles":["background_tasks","ui"]}}}
 proc [kibana] [2024-05-20T14:21:25.518-06:00][DEBUG][plugins.reporting.download-report] Report job 2e8e9914-cc44-45e2-ba77-3ac0f01328f1 is processing. Sending statusCode: 503 {"service":{"node":{"roles":["background_tasks","ui"]}}}
 proc [kibana] [2024-05-20T14:21:26.055-06:00][DEBUG][plugins.reporting.download-report] Report job 2e8e9914-cc44-45e2-ba77-3ac0f01328f1 is processing. Sending statusCode: 503 {"service":{"node":{"roles":["background_tasks","ui"]}}}```

export const reportingDebugLogger = {
    name: 'plugins.reporting',
    level: 'debug',
    appenders: ['console'],
  };

export default createTestConfig({
  serverlessProject: 'es',
  testFiles: [require.resolve('.')],
  junit: {
    reportName: 'Serverless Search API Integration Tests',
  },
  suiteTags: { exclude: ['skipSvlSearch'] },

  // include settings from project controller
  // https://github.com/elastic/project-controller/blob/main/internal/project/esproject/config/elasticsearch.yml
  esServerArgs: [],
  kbnServerArgs: [`--logging.loggers=${JSON.stringify([reportingDebugLogger])}`],
});