handle curve_types to []curve_types conversion in beat es config

[leehinman]

What does this PR do?

Allows ssl.curve_types to be a string as well as a slice of strings when translating beats elasticsearch configuration to otel elasticsearch exporter.

Why is it important?

Beats configuration for elasticsearch configuration allows for ssl.curve_types to be a string or slice of strings.

Checklist

• I have read and understood the pull request guidelines of this project.
• 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
• I have added tests that prove my fix is effective or that my feature works
• I have added an entry in ./changelog/fragments using the changelog tool
• I have added an integration test or an E2E test

Disruptive User Impact

How to test this PR locally

Related issues

• Relates change elasticsearch configuration DecodeHook function to handle string to []string #11732
• Closes [enhancement] Allow curve_type to be string or slice of string in elasticsearch config. #11776

Questions to ask yourself

• How are we going to support this in production?
• How are we going to measure its adoption?
• How are we going to debug this?
• What are the metrics I should take care of?
• ...

[mergify]

This pull request does not have a backport label. Could you fix it @leehinman? 🙏
To fixup this pull request, you need to add the backport labels for the needed
branches, such as:

• backport-./d./d is the label that automatically backports to the 8./d branch. /d is the digit
• backport-active-all is the label that automatically backports to all active branches.
• backport-active-8 is the label that automatically backports to all active minor branches for the 8 major.
• backport-active-9 is the label that automatically backports to all active minor branches for the 9 major.

[elasticmachine]

💔 Build Failed

• Buildkite Build
• Commit: f20ceec

Failed CI Steps

• x86_64:sudo: deb
• x86_64:sudo: deb
• x86_64:sudo: deb

History

• 💔 Build #32304 failed d097546

cc @leehinman