feat: add ipv6 support

[gnmeyer]

Changes

Modified the currency, shipping, quote, and payment services to support IPv6.

Geared towards Kubernetes environments, so there is an associated change in the helm chart repo. (Link)

Link to issue

Merge Requirements

For new features contributions, please make sure you have completed the following
essential items:

• CHANGELOG.md updated to document new feature additions
• Appropriate documentation updates in the docs
• Appropriate Helm chart updates in the helm-charts

Maintainers will not merge until the above have been completed. If you're unsure
which docs need to be changed ping the
@open-telemetry/demo-approvers.

[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: gnmeyer / name: Grant Meyer (1541c75, 2f922bd, 4a5be3b, b61d79a, bc68419, c84d5d2, 40ccb4c)
• ✅ login: julianocosta89 / name: Juliano Costa (29112d2, 84f83c2, 85ae0e1, 9589ec2, d3ab0b1, e5d26b7, f3f93ec)

[julianocosta89]

28m to build the currency and counting 😢

I don't think it is related to the PR though

[julianocosta89]

Hey @gnmeyer thanks for that, and sorry for taking that long to review the PR.
I was in the process of releasing a new version of the Demo and that took longer than expected.

After testing your PR locally and checking the code, I saw that we were missing a couple of stuff.

The services were checking IPV6_ENABLED, but this env var wasn't set anywhere.
I've added it to the services you've changed and also added a control on the .env file.
We need to add the IPV6_ENABLED to the services on the file docker-compose.minimal.yml, would you be able to take care of that?

[gnmeyer]

Hey @julianocosta89, sounds good. I went ahead and added in those changes to the docker compose minimal file. Thanks for the review!

[julianocosta89]

Thanks for that @gnmeyer