[9.1] (backport #10681) [Helm charts] Properly quote boolean values

[mergify]

What does this PR do?

This PR fixes the quoting of boolean values agent.fleet.insecure and agent.fleet.force.

Why is it important?

Prior to the fix, the rendered values for these fields would appear like so, with an extra pair of quotes, which was causing the rendered value to be ineffective:

- name: FLEET_INSECURE
   value: '"true"'
- name: FLEET_FORCE
   value: '"true"'

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

None; fixes a bug.

How to test this PR locally

1. Add insecure: true here.
2. Run mage helm:renderExamples
3. Verify that the env var in the rendered manifest only has a single pair of double quotes around the value.

Thanks @pkoutsovasilis for suggesting the fix and testing steps.

---

This is an automatic backport of pull request #10681 done by Mergify.

[elasticmachine]

Pinging @elastic/elastic-agent-control-plane (Team:Elastic-Agent-Control-Plane)

[elasticmachine]

💛 Build succeeded, but was flaky

• Buildkite Build
• Commit: b2b329d

Failed CI Steps

• x86_64:sudo: upgrade

History

• 💔 Build #29458 failed b9f68fd

cc @ycombinator