feat(helm): support dual-stack networking for load balancers

[bergemalm]

What type of PR is this?

Uncomment only one /kind <> line, press enter to put that in a new line, and remove leading whitespace from that line:

/kind breaking
/kind bug
/kind cleanup
/kind documentation

/kind feature

/kind hotfix
/kind release

What this PR does / Why we need it:

This PR adds support for setting up dual-stack load balancers (IPv4 and IPv6).

[gongmax]

/gcbrun

[agones-bot]

Build Succeeded 🥳

Build Id: f4b94cec-bbc6-4dfe-adae-4b78994cf43f

The following development artifacts have been built, and will exist for the next 30 days:

• image: us-docker.pkg.dev/agones-images/ci/agones-controller:1.46.0-dev-781e4bd
• image: us-docker.pkg.dev/agones-images/ci/agones-extensions:1.46.0-dev-781e4bd
• image: us-docker.pkg.dev/agones-images/ci/agones-sdk:1.46.0-dev-781e4bd-linux
• image: us-docker.pkg.dev/agones-images/ci/agones-ping:1.46.0-dev-781e4bd
• image: us-docker.pkg.dev/agones-images/ci/agones-allocator:1.46.0-dev-781e4bd
• Linux C++ SDK (build): agonessdk-1.46.0-dev-781e4bd-linux-arch_64.tar.gz
• SDK Server: agonessdk-server-1.46.0-dev-781e4bd.zip

A preview of the website (the last 30 builds are retained):

• https://781e4bd-dot-preview-dot-agones-images.appspot.com/

To install this version:

git fetch https://github.com/googleforgames/agones.git pull/4073/head:pr_4073 && git checkout pr_4073
helm install agones ./install/helm/agones --namespace agones-system --set agones.image.registry=us-docker.pkg.dev/agones-images/ci --set agones.image.tag=1.46.0-dev-781e4bd

[gongmax]

Please also add descriptions in the relevant tables in https://github.com/googleforgames/agones/blob/main/site/content/en/docs/Installation/Install%20Agones/helm.md?plain=1

[gongmax]

Instead of commenting out these settings, can we set them to empty values?

[bergemalm]

What about setting them to the default values?

  ipFamilyPolicy: SingleStack
  ipFamilies:
  - IPv4

[gongmax]

Same as above

[gongmax]

Same as above

[bergemalm]

PR updated. Descriptions added and empty values set. @gongmax

[gongmax]

/gcbrun

[agones-bot]

Build Failed 😭

Build Id: 47d1c0b1-a0c7-4607-91a0-4271bb652c79

Status: FAILURE

• Cloud Build view
• Cloud Build log download

To get permission to view the Cloud Build view, join the agones-discuss Google Group.

[gongmax]

/gcbrun

[agones-bot]

Build Succeeded 🥳

Build Id: 8b9f66bb-1ba2-47e8-b229-22c69e27546e

The following development artifacts have been built, and will exist for the next 30 days:

• image: us-docker.pkg.dev/agones-images/ci/agones-controller:1.46.0-dev-a04ccc8
• image: us-docker.pkg.dev/agones-images/ci/agones-extensions:1.46.0-dev-a04ccc8
• image: us-docker.pkg.dev/agones-images/ci/agones-sdk:1.46.0-dev-a04ccc8-linux
• image: us-docker.pkg.dev/agones-images/ci/agones-ping:1.46.0-dev-a04ccc8
• image: us-docker.pkg.dev/agones-images/ci/agones-allocator:1.46.0-dev-a04ccc8
• Linux C++ SDK (build): agonessdk-1.46.0-dev-a04ccc8-linux-arch_64.tar.gz
• SDK Server: agonessdk-server-1.46.0-dev-a04ccc8.zip

A preview of the website (the last 30 builds are retained):

• https://a04ccc8-dot-preview-dot-agones-images.appspot.com/

To install this version:

git fetch https://github.com/googleforgames/agones.git pull/4073/head:pr_4073 && git checkout pr_4073
helm install agones ./install/helm/agones --namespace agones-system --set agones.image.registry=us-docker.pkg.dev/agones-images/ci --set agones.image.tag=1.46.0-dev-a04ccc8

[gongmax]

Sorry for the back and forth. We need to add expiry / publish versions on the documentation so it's only visible in next release. Similar as dc6d4a0#diff-481b1839587cfc3a359e5e82a78b375445ebe75fe39d5c070150bc4f3a2f51adR195. Otherwise, LGTM