Change the API for allocator to allocation.proto

[pooneh-m]

No description provided.

[agones-bot]

Build Succeeded 👏

Build Id: 57f6a17a-1475-4d3f-b229-79ed97572e63

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

• image: gcr.io/agones-images/agones-controller:1.1.0-32b38ab
• image: gcr.io/agones-images/agones-sdk:1.1.0-32b38ab
• image: gcr.io/agones-images/agones-ping:1.1.0-32b38ab
• Linux C++ SDK (build): agonessdk-1.1.0-32b38ab-linux-arch_64.tar.gz
• SDK Server: agonessdk-server-1.1.0-32b38ab.zip

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

• https://32b38ab-dot-preview-dot-agones-images.appspot.com/

To install this version:

• git fetch https://github.com/GoogleCloudPlatform/agones.git pull/1123/head:pr_1123 && git checkout pr_1123
• helm install install/helm/agones --namespace agones-system --name agones --set agones.image.tag=1.1.0-32b38ab

[agones-bot]

Build Succeeded 👏

Build Id: 61be19ac-582d-44a8-b783-c0a0516b02e0

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

• image: gcr.io/agones-images/agones-controller:1.1.0-b131037
• image: gcr.io/agones-images/agones-sdk:1.1.0-b131037
• image: gcr.io/agones-images/agones-ping:1.1.0-b131037
• Linux C++ SDK (build): agonessdk-1.1.0-b131037-linux-arch_64.tar.gz
• SDK Server: agonessdk-server-1.1.0-b131037.zip

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

• https://b131037-dot-preview-dot-agones-images.appspot.com/

To install this version:

• git fetch https://github.com/GoogleCloudPlatform/agones.git pull/1123/head:pr_1123 && git checkout pr_1123
• helm install install/helm/agones --namespace agones-system --name agones --set agones.image.tag=1.1.0-b131037

[google-oss-robot]

[APPROVALNOTIFIER] This PR is APPROVED

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

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[roberthbailey]

I'm marking this as a breaking change, since it's changing the API surface for the allocator. Since this is still an alpha feature that's ok, but I think it'll help craft the release notes for 1.1 (so that anyone using this feature will be made aware).