Add agones-kotlin-sdk to list of Client SDKs

[scrayos]

What this PR does / Why we need it:
This adds https://github.com/scrayosnet/agones-kotlin-sdk to the list of Client SDKs. It's a well tested, modern and gRPC implementation of the full set of the Agones SDK including all alpha, beta and stable API operations.

[markmandel]

/gcbrun

[agones-bot]

Build Failed 😭

Build Id: e4d5bb72-e59a-4688-938f-4ad32bf8a74e

Status: FAILURE

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[markmandel]

Weird flake. Autopilot has been grumpy lately.

/gcbrun

[agones-bot]

Build Failed 😭

Build Id: 7a6144fa-c3c1-4682-87e6-0c7a520dac0e

Status: FAILURE

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[markmandel]

ERBOSE: time="2026-02-28 05:58:40.666" level=info msg="GameServer created, waiting for Ready" gs=game-serverkmgqd test=TestGameServerTcpUdpProtocol
VERBOSE: time="2026-02-28 05:58:40.866" level=info msg="Waiting for states to match" awaitingState=Ready currentState=Starting gs=game-serverkmgqd test=TestGameServerTcpUdpProtocol
VERBOSE: time="2026-02-28 05:58:41.852" level=info msg="Waiting for states to match" awaitingState=Ready currentState=Starting gs=game-serverkmgqd test=TestGameServerTcpUdpProtocol
VERBOSE: time="2026-02-28 05:58:42.852" level=info msg="Waiting for states to match" awaitingState=Ready currentState=Starting gs=game-serverkmgqd test=TestGameServerTcpUdpProtocol
VERBOSE: time="2026-02-28 05:58:43.856" level=info msg="Waiting for states to match" awaitingState=Ready currentState=RequestReady gs=game-serverkmgqd test=TestGameServerTcpUdpProtocol
VERBOSE: time="2026-02-28 05:58:44.854" level=info msg="GameServer states match" awaitingState=Ready currentState=Ready gs=game-serverkmgqd test=TestGameServerTcpUdpProtocol
VERBOSE: time="2026-02-28 05:58:44.854" level=info msg="GameServer Ready" gs=game-serverkmgqd
VERBOSE: time="2026-02-28 05:58:44.854" level=info msg="GameServer created, sending UDP ping" name=game-serverkmgqd
VERBOSE: time="2026-02-28 05:58:45.029" level=info msg="UDP ping passed, sending TCP ping" name=game-serverkmgqd
VERBOSE:     gameserver_test.go:1093: Could not ping TCP GameServer: dial tcp 130.211.244.245:7530: connect: connection refused
VERBOSE: --- FAIL: TestGameServerTcpUdpProtocol (4.78s)
VERBOSE: FAIL
VERBOSE: time="2026-02-28 05:58:45.644" level=info msg="Namespace 1772258319 is deleted"
VERBOSE: FAIL	agones.dev/agones/test/e2e	7.868s
--- END RAW VERBOSE OUTPUT ---

Let's try this again, but I'm a tad worried the firewall for Autopilot isn't working for some reason for TCP or something similar. Looks like e2e tests are passing fine on GKE standard.

[markmandel]

/gcbrun

[agones-bot]

Build Failed 😭

Build Id: b16b0234-81b8-4b74-99c7-2e815cd4da4b

Status: FAILURE

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[Sivasankaran25]

/gcbrun

[agones-bot]

Build Succeeded 🥳

Build Id: 7cf6a447-4973-4710-8339-bb42de059c7b

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:1.57.0-dev-3646922
• image: us-docker.pkg.dev/agones-images/ci/agones-extensions:1.57.0-dev-3646922
• image: us-docker.pkg.dev/agones-images/ci/agones-sdk:1.57.0-dev-3646922-linux
• image: us-docker.pkg.dev/agones-images/ci/agones-ping:1.57.0-dev-3646922
• image: us-docker.pkg.dev/agones-images/ci/agones-allocator:1.57.0-dev-3646922
• image: us-docker.pkg.dev/agones-images/ci/agones-processor:1.57.0-dev-3646922
• Linux C++ SDK (build): agonessdk-1.57.0-dev-3646922-linux-arch_64.tar.gz
• SDK Server: agonessdk-server-1.57.0-dev-3646922.zip

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

• https://3646922-dot-preview-dot-agones-images.appspot.com/

To install this version:

git fetch https://github.com/googleforgames/agones.git pull/4462/head:pr_4462 && git checkout pr_4462
helm install agones ./install/helm/agones --namespace agones-system --set agones.image.registry=us-docker.pkg.dev/agones-images/ci --set agones.image.tag=1.57.0-dev-3646922