Missing load balancer values

[FedericoAntoniazzi]

What this PR does / why we need it:

There were missing values in the default values.yaml file, which required visiting the implementation for discovering how to configure the proxy Service.
This PR reports those values in the default values.yaml file.

Special notes for your reviewer:

Checklist

• PR is based off the current tip of the main branch.
• Changes are documented under the "Unreleased" header in CHANGELOG.md
• New or modified sections of values.yaml are documented in the README.md
• Commits follow the Kong commit message guidelines

[CLAassistant]

All committers have signed the CLA.

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}

[pmalek]

You'll probably want to run make test.golden.update to update the golden files for tests

[FedericoAntoniazzi]

You'll probably want to run make test.golden.update to update the golden files for tests

Hi @pmalek. I ran make test.golden.update but there are no changes. everything seems to be okay

[pmalek]

Thanks for the contribution. Please rebase on top of latest changes in main.

[FedericoAntoniazzi]

Hi @pmalek, thanks for your review and support!
I rebased the commits on top of main.