IIS_31547: The iis parsing for IPv6 logs

[ishleenk17]

• Bug

What does this PR do?

This PR addresses the issue of parsing access logs in IIS with IPv6 addresses.

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.

How to test this PR locally

To test this PR, test the ingest pipeline by running elastic-package test pipeline -v -g

Related issues

• Closes The iis exchange parsing for IPv6 fails to work correctly beats#31547
• Relates https://github.com/elastic/sdh-beats/issues/1999

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• Start Time: 2022-05-10T13:25:50.275+0000

• Duration: 14 min 26 sec

Test stats 🧪

Test	Results
Failed	0
Passed	87
Skipped	0
Total	87

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🌐 Coverage report

Name	Metrics % (covered/total)	Diff
Packages	100.0% (3/3)	💚
Files	100.0% (3/3)	💚 3.667
Classes	100.0% (3/3)	💚 3.667
Methods	89.796% (44/49)	👍 0.726
Lines	90.497% (419/463)	👍 0.419
Conditionals	100.0% (0/0)	💚

[ishleenk17]

Raising a new PR as this had some unwanted files merged as well