[O11y][CockroachDB] Migrate visualizations to lens in Kibana 8.4.0

[rajvi-patel-22]

• Enhancement

What does this PR do?

• Migrate visualizations to lens for CockroachDB integration package

• Statistics for CockroachDB Lens migration:

CockroachDB Dashboards	Before Migration		After Migration
	Lens	Visualization	Lens	Visualization
[CockroachDB Metrics] Overview	0	7	7	0
	0	7	7	0

Checklist

• I have added an entry to my package's changelog.yml file.
• I have verified that panels are populated with data.
• I have verified that panels are not distorted after being migrated to lens.
• I have updated screenshots of dashboard.
• I have verified that data count are matching and panel aggregations are same as before.

Author's Checklist

• Migrated panels should be removed from visualization folder.
• Migrated visualizations are populating in current Kibana version 8.4.0 itself.

Related issues

• Relates Lens Migration of OBS integrations #5221

Issues Identified

• Gradient and rainbow color palettes are not available in lens and won't be available in the future versions as well.
  [Lens] Support for Gradient and Rainbow color palette in Lens kibana#152699
  Impact : [ Severity : Low, Workaround : Yes (Use default color palette)]

Note: The screenshot of the [CockroachDB Metrics] Overview dashboard is not synced with the Kibana files. Please refer to the below screenshot to compare the migrated visualization:

[elasticmachine]

💚 Build Succeeded

the below badges are clickable and redirect to their specific view in the CI or DOCS

Expand to view the summary

Build stats

• Start Time: 2023-03-27T03:49:01.294+0000

• Duration: 15 min 25 sec

Test stats 🧪

Test	Results
Failed	0
Passed	4
Skipped	0
Total	4

🤖 GitHub comments

Expand to view the GitHub comments

To re-run your PR in the CI, just comment with:

• /test : Re-trigger the build.

[elasticmachine]

🌐 Coverage report

Name	Metrics % (covered/total)	Diff
Packages	100.0% (0/0)	💚
Files	100.0% (0/0)	💚 2.23
Classes	100.0% (0/0)	💚 2.23
Methods	75.0% (3/4)	👎 -18.247
Lines	100.0% (0/0)	💚 6.878
Conditionals	100.0% (0/0)	💚

[kush-elastic]

LGTM!

[ritalwar]

LGTM!

[elasticmachine]

Package cockroachdb - 1.3.0 containing this change is available at https://epr.elastic.co/search?package=cockroachdb