Manually migrate Couchbase visualizations to lens in kibana version 8.4.0.

Preparation of data for testing

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

Migration stats

Dashboard : [Metrics Couchbase] Node Overview

• Migrate 4 visualizations to the lens
  • [O11y][Couchbase] Lens migration for visualizations to kibana version 8.4.0 #5612

Dashboard : [Metrics Couchbase] Metrics Overview

• Migrate 7 visualizations to the lens
  • [O11y][Couchbase] Lens migration for visualizations to kibana version 8.4.0 #5612

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 (8.3.0)