[Stack Monitoring] Test the Elasticsearch Integration in SM app

[neptunian]

• The elasticsearch integration should function in stack monitoring correctly (minus any issues with the package itself). (manual steps to come)
• Functional tests should be created and pass for the metrics-elasticsearch* data
• Identify any issues with the package

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Adding acceptance criteria to keep in mind when testing new Elasticsearch package:

Install Elasticsearch package via integrations UI and test few options in the UI to make sure it works

• Collect only metrics (uncheck logs)
• Collect both metrics and logs

Following set up should be looked at:

• Multi node cluster environment
• Viewing multiple (at least 2) clusters data

Following use cases/data points should be reviewed to make sure things are working properly:

• Cluster listing page (more than 1 cluster)
• Cluster view page (overview, nodes, indices, logs)
• Cluster overview (search and index graphs, recent log entries, Shard activity)
• Node listing page
• Node details page (Overview - various graphs, recent log entries, shard legend | Advanced)
• Indices listing
  • Elasticsearch integration: missing index_stats alias on index mappings #119984
• Indices details page (Overview - various graphs, recent log entries, shard legend | Advanced)
• Jobs
• CCR
• Alerts workflows in UI, active alert workflows in UI
• How we identify stack monitoring data is present and any initial messaging in self-managed and Cloud
• Review collected logs to verify that they can be viewed in the Logs UI

[elasticmachine]

Pinging @elastic/infra-monitoring-ui (Team:Infra Monitoring UI)