[O11y][Nginx] Migrate [Logs Nginx] Overview dashboard visualizations to lens in kibana 8.5.0

[rajvi-patel-22]

• Enhancement

What does this PR do?

• Migrate [Logs Nginx] Overview dashboard visualizations to lens for Nginx integration package

• Statistics for Nginx Lens migration:

Nginx Dashboards	Before Migration		After Migration
	Lens	Visualization	Lens	Visualization
[Logs Nginx] Overview	0	8	7	1 (Markdown)
	0	8	7	1 (Markdown)

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 8.5.0 itself.

Related issues

• Relates Lens Migration of OBS integrations #5221

Note:
In the Response codes over time [Logs Nginx] we faced below two issues:

1. Lens doesn't have a gradient color palette.
   Solution: Set the color palette to status color palette because the values are defined by response status codes.
2. We are unable to set http.response.status_code: [200 TO 299] filters due to number_format_exception.
   Solution: To overcome this issue we have set the filter as http.response.status_code >= 200 and http.response.status_code<= 299.

[elasticmachine]

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Build stats

• Start Time: 2023-04-06T05:44:59.468+0000

• Duration: 16 min 59 sec

Test stats 🧪

Test	Results
Failed	0
Passed	24
Skipped	0
Total	24

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🌐 Coverage report

Name	Metrics % (covered/total)	Diff
Packages	100.0% (2/2)	💚
Files	50.0% (2/4)	👍
Classes	50.0% (2/4)	👍
Methods	69.231% (27/39)	👍
Lines	70.37% (228/324)	👍
Conditionals	100.0% (0/0)	💚

[milan-elastic]

Approved!

[agithomas]

Please remove [Logs Nginx] phrase from the cangelog

[rajvi-patel-22]

Please remove [Logs Nginx] phrase from the cangelog

@agithomas, I'll remove the [Logs Nginx] phrase but there are two overview dashboards in Nginx.

1. [Logs Nginx] Overview
2. [Metrics Nginx] Overview

So, It would be good to keep Logs Overview and Metrics Overview in the description. What do you think?

[agithomas]

Please remove [Logs Nginx] phrase from the cangelog

@agithomas, I'll remove the [Logs Nginx] phrase but there are two overview dashboards in Nginx.

1. [Logs Nginx] Overview
2. [Metrics Nginx] Overview

So, It would be good to keep Logs Overview and Metrics Overview in the description. What do you think?

Suggestions are just fine.

[agithomas]

LGTM!

[elasticmachine]

Package nginx - 1.10.0 containing this change is available at https://epr.elastic.co/search?package=nginx