Backport PR #16538 to 8.x: add http.* deprecation log

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Backport PR #16538 to 8.x branch, original message:

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This PR updates settings.rb and java Setting class, hence, needs to merge to main and backports to 8.x

Release notes

Add deprecation logs for http.host, http.port, http.enabled and http.environment

What does this PR do?

• refactor deprecated alias to support obsoleted version to provide consistent deprecation warning
• add deprecation log for http.* config

Why is it important/What is the impact to the user?

This commit gives users a clear message that http.* will be removed in next major.

Checklist

• My code follows the style guidelines of this project
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have made corresponding change to the default configuration files (and/or docker env variables)
• I have added tests that prove my fix is effective or that my feature works

Author's Checklist

• [ ]

How to test this PR locally

http.port: 9600
http.enabled: false
xpack.geoip.download.endpoint: ""

• run logstash with the above logstash.yml
• logstash-deprecation.log should say http.* will be removed in version 9 and xpack.geoip.download.endpoint will be removed in a future release

Related issues

• relates: https://github.com/elastic/ingest-dev/issues/3663

Use cases

Screenshots

Logs

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Measures
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