[O11y][Couchbase] Lens Migration

[kush-elastic]

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

Couchbase dashboards	Before Migration		After Migration
	Lens	Visualization	Lens	Visualization
[Metrics Couchbase] Sync Gateway Overview	18	0	18	0
[Metrics Couchbase] Node Overview	0	4	4	0
[Metrics Couchbase] Metrics Overview	0	7	7	0
[Metrics Couchbase] XDCR Overview	7	0	7	0
	25	11	36	0

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)

[agithomas]

@kush-elastic , i do not see a PR link . Can you please add the PR link to the issue?

[kush-elastic]

PR is approved and merged, hence closing this issue: #5612