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

[rajvi-patel-22]

• Enhancement

What does this PR do?

• Migrate [Metrics 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
[Metrics Nginx] Overview	0	9	9	0
	0	9	9	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 8.5.0 itself.

Related issues

• Relates Lens Migration of OBS integrations #5221

[elasticmachine]

💚 Build Succeeded

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Build stats

• Start Time: 2023-04-05T10:15:02.104+0000

• Duration: 16 min 48 sec

Test stats 🧪

Test	Results
Failed	0
Passed	31
Skipped	0
Total	31

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🌐 Coverage report

Name	Metrics % (covered/total)	Diff
Packages	100.0% (2/2)	💚
Files	50.0% (2/4)	👎 -50.0
Classes	50.0% (2/4)	👎 -50.0
Methods	69.231% (27/39)	👎 -30.769
Lines	70.37% (228/324)	👎 -27.677
Conditionals	100.0% (0/0)	💚

[milan-elastic]

Approved!

[kush-elastic]

LGTM!

[agithomas]

Y -axis is missing for some of the panels. Please add the Y-axis and the appropriate labels to Y-axis

[rajvi-patel-22]

Y -axis is missing for some of the panels. Please add the Y-axis and the appropriate labels to Y-axis

@agithomas, Below are the suggested Y-axis labels:

Panel	Y-axis label
Active connections [Metrics Nginx]	Active
Reading / Writing / Waiting Rates [Metrics Nginx] Request Rate [Metrics Nginx] Accepts and Handled Rate [Metrics Nginx] Drops Rate [Metrics Nginx]	Rate

Should we update PR with above Y-axis labels?

[agithomas]

Y -axis is missing for some of the panels. Please add the Y-axis and the appropriate labels to Y-axis

@agithomas, Below are the suggested Y-axis labels:

Panel Y-axis label
 Active connections [Metrics Nginx] Active
Reading / Writing / Waiting Rates [Metrics Nginx]
Request Rate [Metrics Nginx]
Accepts and Handled Rate [Metrics Nginx]
Drops Rate [Metrics Nginx] Rate
Should we update PR with above Y-axis labels?

looks good to me. Yes, please.

[rajvi-patel-22]

Y -axis is missing for some of the panels. Please add the Y-axis and the appropriate labels to Y-axis

@agithomas, I have updated the PR with suggested Y-axis labels. Can you please review it?

[agithomas]

LGTM!

[elasticmachine]

Package nginx - 1.9.0 containing this change is available at https://epr.elastic.co/search?package=nginx