[O11y][PostgreSQL] Lens migration for Overview dashboard visualizations to Kibana version 8.4.0

[rajvi-patel-22]

• Enhancement

What does this PR do?

• Migrate visualizations to lens for PostgreSQL integration package

• Statistics for PostgreSQL Lens migration:

PostgreSQL Dashboards	Before Migration		After Migration
	Lens	Visualization	Lens	Visualization	New control panel
[Logs PostgreSQL] Overview	0	2	2	0	0
	0	2	2	0	0

Note: One visualization is migrated to new input controls.

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

[elasticmachine]

💚 Build Succeeded

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Build stats

• Start Time: 2023-03-30T12:04:49.344+0000

• Duration: 18 min 44 sec

Test stats 🧪

Test	Results
Failed	0
Passed	54
Skipped	0
Total	54

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🌐 Coverage report

Name	Metrics % (covered/total)	Diff
Packages	100.0% (1/1)	💚
Files	100.0% (4/4)	💚
Classes	100.0% (4/4)	💚
Methods	93.333% (28/30)	👍 26.667
Lines	97.041% (164/169)	👍 2.855
Conditionals	100.0% (0/0)	💚

[agithomas]

LGTM!

[agithomas]

Please complete the Peer review

[milan-elastic]

Thanks @rajvi-elastic ! Approved!

[kush-elastic]

LGTM!

[elasticmachine]

Package postgresql - 1.11.0 containing this change is available at https://epr.elastic.co/search?package=postgresql