[Zookeeper] Added metric type mapping for connection datastream

[agithomas]

• Enhancement

What does this PR do?

Added metric_type mapping for connections datastream.

Checklist

• I have reviewed tips for building integrations and this pull request is aligned with them.
• I have verified that all data streams collect metrics or logs.
• I have added an entry to my package's changelog.yml file.
• I have verified that Kibana version constraints are current according to guidelines.

Author's Checklist

• [ ]

How to test this PR locally

• elastic-package build
• Mapping tests completed
• Dashboard tests completed

Related issues

• [Zookeeper] TSDB Enablement #7752

Screenshots

[agithomas]

Interest Ops Details can be found here and hence not assigned a metric type : https://netty.io/3.9/api/org/jboss/netty/channel/Channel.html

[agithomas]

Mapping test details

[elasticmachine]

💚 Build Succeeded

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Build stats

• Start Time: 2023-09-12T04:44:57.150+0000

• Duration: 13 min 51 sec

Test stats 🧪

Test	Results
Failed	0
Passed	7
Skipped	0
Total	7

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[elasticmachine]

🌐 Coverage report

Name	Metrics % (covered/total)	Diff
Packages	100.0% (0/0)	💚
Files	100.0% (0/0)	💚
Classes	100.0% (0/0)	💚
Methods	66.667% (6/9)	👎 -25.792
Lines	100.0% (0/0)	💚 8.477
Conditionals	100.0% (0/0)	💚

[ritalwar]

LGTM!

[elasticmachine]

Package zookeeper - 1.8.0 containing this change is available at https://epr.elastic.co/search?package=zookeeper