[O11y][AWS Usage Metrics] Lens Migration

[milan-elastic]

Manually migrate AWS Usage Metrics visualizations to the lens in the current Kibana version 8.7.1 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

AWS Usage Metrics Dashboards	Before Migration				After Migration
	Maps	Search	Lens	Visualization	Maps	Search	Lens	Visualization
[Metrics AWS] Usage Overview	0	0	0	7	0	0	7	0

Dashboard : [AWS Usage Metrics] Dashboards

• Migrate x visualization to the lens.
  • [O11y][AWS Usage] Migrate Usage Overview dashboard visualizations to lens in kibana 8.7.1  #6368

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 8.7.1