[SLO] Investigate current Application Usage for SLO pages

[mgiota]

Relates to https://github.com/elastic/kibana/pull/177937

🍒 Summary

As part of SLO migration to a new plugin, I want to make sure if there is any SLO telemetry in place. From my initial investigation it looks like Application Usage was added to Alerts, Cases and Rules as part of this PR and no further steps were done to add application usage to SLO pages.

Application Usage is tracked automatically for each plugin by using the platform currentAppId$ observer.

Quoting from Tracking Your Plugin Application

Since SLO was under observability plugin, which is already tracked under the observability-overview appId by the telemetry app, I want to make sure if there is any telemetry data reported for SLO pages. The manual steps mentioned here don't work anymore, so I can not manually test if there is already any telemetry data reported for SLO pages. SLO pages are not wrapped with the TrackApplicationView Higher order component, so my assumption is that it won't have any telemetry data for SLO pages.

✔️ Acceptance criteria

• Verify if there is existing Application usage for SLO pages
• Find a way to manually test the telemetry "cluster data" that Kibana is currently sending
• Properly implement Application usage for SLO pages
  • new slo plugin has the slo appId and this will be used for telemetry purposes while registering the app to core
  • wrap SLO pages with TrackApplicationView component
• Consult with the platfrom analytics team of what other type of telemetry we can add to our applications

[elasticmachine]

Pinging @elastic/obs-ux-management-team (Team:obs-ux-management)

[jasonrhodes]

@mgiota I'd love to help with this as I'm trying to increase my familiarity with the BI suite -- have you made progress yet? If not, we can maybe pair after you get the SLO plugin migration PR merged?