Tag CI build with commit, tag e2e with parent build ID

[zmerlynn]

This lets us associate sub-builds by commit or by parent build ID

[google-oss-prow]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: gongmax, zmerlynn
Once this PR has been reviewed and has the lgtm label, please assign ericfortin for approval. For more information see the Kubernetes Code Review Process.

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[google-oss-prow]

New changes are detected. LGTM label has been removed.

[agones-bot]

Build Succeeded 👏

Build Id: 461fe105-5fe1-4b59-9ac7-f37935a368d1

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:1.31.0-832d20c-amd64
• image: us-docker.pkg.dev/agones-images/ci/agones-sdk:1.31.0-832d20c-linux-amd64
• image: us-docker.pkg.dev/agones-images/ci/agones-ping:1.31.0-832d20c-amd64
• image: us-docker.pkg.dev/agones-images/ci/agones-allocator:1.31.0-832d20c-amd64
• Linux C++ SDK (build): agonessdk-1.31.0-832d20c-amd64-linux-arch_64.tar.gz
• SDK Server: agonessdk-server-1.31.0-832d20c-amd64.zip

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

• https://832d20c-dot-preview-dot-agones-images.appspot.com/

To install this version:

• git fetch https://github.com/googleforgames/agones.git pull/3080/head:pr_3080 && git checkout pr_3080
• helm install agones ./install/helm/agones --namespace agones-system --agones.image.release=us-docker.pkg.dev/agones-images/ci --set agones.image.tag=1.31.0-832d20c-amd64