Manually migrate ETCD visualizations to lens in current Kibana version 8.3.0 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

Note: One visualization is migrated to new input controls.

Data stream : Metrics

• Migrate 7 visualization to the lens.
  • [O11y][ETCD] Lens migration for visualizations to Kibana version 8.3.0 #5545

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)