[O11y] [Azure Application Insights] Lens Migration

[milan-elastic]

Manually migrate Azure Application Insights visualizations to the lens in the current Kibana version itself.

Preparation of data for testing

• Use sample_event.json / setup live instance using docker / mock data using a mock server to populate dashboards

Migration stats

Migration Stats:

	Before Migration		After Migration
Dashboad Name	Lens	Visualization	Lens	Visualization
[Logs Azure] App State Overview	10	1	11	0

Dashboard : [Azure Metrics] App State Overview

• Migrate visualization to the lens.
  • [O11y][Azure Application Insight] App state overview Lens Migration #8379

Verification and Validation

• Verification of functionality remains the same after migration in Kibana
• Verification of data count of after-migrated visualization with before-migrated visualization in Kibana
• Verification of Dashboards is not distorted in the supported Kibana version (TBD)

[rajvi-patel-22]

Application insights Lens migration task is blocked due to this issue: #7259

[rajvi-patel-22]

Changing type from flattened to object resolves the dashboard issue.

Dashboards are not showing any error after updating data type!