Add more items to .gcloudignore

[markmandel]

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:

Was doing some Cloud Build testing with simple-game-server, and with these changes dropped my upload from several terabytes to ~350MB.

Which issue(s) this PR fixes:

N/A

Special notes for your reviewer:

N/A

[markmandel]

@Kalaiselvi84 @igooch This should make things easier for updates to any of the examples 😃

[google-oss-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: gongmax, markmandel

The full list of commands accepted by this bot can be found here.

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• OWNERS [markmandel]

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[igooch]

The #!include:.gitignore ignores all files that are included in the .gitignore file, we might want to keep that?

[markmandel]

The #!include:.gitignore ignores all files that are included in the .gitignore file, we might want to keep that?

Huh that's weird, I didn't even realise I removed that. I didn't think that actually did anything! Lemme add it back in.

[google-oss-prow]

New changes are detected. LGTM label has been removed.

[agones-bot]

Build Failed 😱

Build Id: 9eb3f31d-5a0b-40e1-851d-91de5d3bbf32

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• Cloud Build log download

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[agones-bot]

Build Succeeded 👏

Build Id: 3ab6dcce-a9a1-4f3f-a423-0144966d01f7

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:1.35.0-dev-883690e-amd64
• image: us-docker.pkg.dev/agones-images/ci/agones-extensions:1.35.0-dev-883690e-amd64
• image: us-docker.pkg.dev/agones-images/ci/agones-sdk:1.35.0-dev-883690e-linux-amd64
• image: us-docker.pkg.dev/agones-images/ci/agones-ping:1.35.0-dev-883690e-amd64
• image: us-docker.pkg.dev/agones-images/ci/agones-allocator:1.35.0-dev-883690e-amd64
• Linux C++ SDK (build): agonessdk-1.35.0-dev-883690e-amd64-linux-arch_64.tar.gz
• SDK Server: agonessdk-server-1.35.0-dev-883690e-amd64.zip

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

• https://883690e-dot-preview-dot-agones-images.appspot.com/

To install this version:

• git fetch https://github.com/googleforgames/agones.git pull/3383/head:pr_3383 && git checkout pr_3383
• helm install agones ./install/helm/agones --namespace agones-system --set agones.image.registry=us-docker.pkg.dev/agones-images/ci --set agones.image.tag=1.35.0-dev-883690e-amd64