[O11y][CouchDB] Lens Migration

[rajvi-patel-22]

Manually migrate CouchDB visualizations to lens in current Kibana version 8.4.0 itself.

Preparation of data for testing

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

Migration stats

CouchDB dashboard	Before Migration		After Migration
	Lens	Visualization	Lens	Visualization
[Metrics CouchDB] Server	0	8	7	0
	0	8	7	0

Note: 1 visualization is migrated to new control panels.

Data stream: Server

• Migrate 8 visualizations to the lens.
  • [O11y][CouchDB] Lens migration for visualizations to Kibana version 8.4.0 #5574

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 Dashboard are not distorted in supported Kibana version (8.4.0)

[rajvi-patel-22]

PR is approved and merged, hence closing this issue. #5574