Change the multi-cluster allocation API version to stable

[pooneh-m]

What type of PR is this?
/kind breaking

What this PR does / Why we need it:
Changes the API version for multi-cluster allocation to stable.

Which issue(s) this PR fixes:
Closes #1534

[steven-supersolid]

I'm not sure why but the Node.js SDK package-lock.json file was changed so this should probably be removed from the review

[agones-bot]

Build Failed 😱

Build Id: b5cae716-517c-4231-bcea-a540dc78adba

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[agones-bot]

Build Succeeded 👏

Build Id: ab1a3ec5-f155-4fef-b9da-b4cb8edb2c70

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

• image: gcr.io/agones-images/agones-controller:1.6.0-c472de0
• image: gcr.io/agones-images/agones-sdk:1.6.0-c472de0
• image: gcr.io/agones-images/agones-ping:1.6.0-c472de0
• Linux C++ SDK (build): agonessdk-1.6.0-c472de0-linux-arch_64.tar.gz
• SDK Server: agonessdk-server-1.6.0-c472de0.zip

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

• https://c472de0-dot-preview-dot-agones-images.appspot.com/

To install this version:

• git fetch https://github.com/GoogleCloudPlatform/agones.git pull/1540/head:pr_1540 && git checkout pr_1540
• helm install ./install/helm/agones --namespace agones-system --name agones --set agones.image.tag=1.6.0-c472de0

[pooneh-m]

I'm not sure why but the Node.js SDK package-lock.json file was changed so this should probably be removed from the review

Thanks. I removed the package-lock.json.

[agones-bot]

Build Succeeded 👏

Build Id: 2d6ebcf4-a5d3-462e-80d0-62fa1577ddce

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

• image: gcr.io/agones-images/agones-controller:1.6.0-415ee32
• image: gcr.io/agones-images/agones-sdk:1.6.0-415ee32
• image: gcr.io/agones-images/agones-ping:1.6.0-415ee32
• Linux C++ SDK (build): agonessdk-1.6.0-415ee32-linux-arch_64.tar.gz
• SDK Server: agonessdk-server-1.6.0-415ee32.zip

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

• https://415ee32-dot-preview-dot-agones-images.appspot.com/

To install this version:

• git fetch https://github.com/GoogleCloudPlatform/agones.git pull/1540/head:pr_1540 && git checkout pr_1540
• helm install ./install/helm/agones --namespace agones-system --name agones --set agones.image.tag=1.6.0-415ee32

[google-oss-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: pooneh-m, roberthbailey

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

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [pooneh-m,roberthbailey]

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[google-oss-robot]

New changes are detected. LGTM label has been removed.

[agones-bot]

Build Succeeded 👏

Build Id: dc45c39b-3ff5-4266-ab94-862865d8a80e

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

• image: gcr.io/agones-images/agones-controller:1.6.0-62a8a81
• image: gcr.io/agones-images/agones-sdk:1.6.0-62a8a81
• image: gcr.io/agones-images/agones-ping:1.6.0-62a8a81
• Linux C++ SDK (build): agonessdk-1.6.0-62a8a81-linux-arch_64.tar.gz
• SDK Server: agonessdk-server-1.6.0-62a8a81.zip

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

• https://62a8a81-dot-preview-dot-agones-images.appspot.com/

To install this version:

• git fetch https://github.com/GoogleCloudPlatform/agones.git pull/1540/head:pr_1540 && git checkout pr_1540
• helm install ./install/helm/agones --namespace agones-system --name agones --set agones.image.tag=1.6.0-62a8a81