[O11y][WebSphere Application Server] Migrate threadpool dashboard visualizations to lens in Kibana 8.3.0

[rajvi-patel-22]

• Enhancement

What does this PR do?

• Migrate Threadpool data-stream visualizations to lens for WebSphere Application Server integration package

• Statistics for WebSphere Application Server Lens migration:

WebSphere Application Server dashboard	Before Migration		After Migration
	Lens	Visualization	Lens	Visualization
[Metrics WebSphere Application Server] ThreadPool	6	1	6	0
	6	1	6	0

Note: Migrate 1 visualization to new control panel.

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 8.3.0 itself.

Related issues

• Relates Lens Migration of OBS integrations #5221

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Build stats

• Start Time: 2023-03-23T13:45:19.036+0000

• Duration: 27 min 25 sec

Test stats 🧪

Test	Results
Failed	0
Passed	38
Skipped	0
Total	38

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Name	Metrics % (covered/total)	Diff
Packages	100.0% (4/4)	💚
Files	100.0% (4/4)	💚
Classes	100.0% (4/4)	💚
Methods	100.0% (28/28)	💚
Lines	100.0% (488/488)	💚
Conditionals	100.0% (0/0)	💚

[agithomas]

LGTM. Please complete peer review.

[kush-elastic]

LGTM!