Retry on failures for multi-cluster allocation

[pooneh-m]

1. Adding retry on multi-cluster failure.
2. Retry with another cluster if the status is not allocated

[agones-bot]

Build Succeeded 👏

Build Id: 9962ffbf-a6b8-440b-af66-9b1c536143ec

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

• image: gcr.io/agones-images/agones-controller:1.1.0-535a356
• image: gcr.io/agones-images/agones-sdk:1.1.0-535a356
• image: gcr.io/agones-images/agones-ping:1.1.0-535a356
• Linux C++ SDK (build): agonessdk-1.1.0-535a356-linux-arch_64.tar.gz
• SDK Server: agonessdk-server-1.1.0-535a356.zip

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

• https://535a356-dot-preview-dot-agones-images.appspot.com/

To install this version:

• git fetch https://github.com/GoogleCloudPlatform/agones.git pull/1130/head:pr_1130 && git checkout pr_1130
• helm install install/helm/agones --namespace agones-system --name agones --set agones.image.tag=1.1.0-535a356

[ilkercelikyilmaz]

LGTM

[google-oss-robot]

[APPROVALNOTIFIER] This PR is APPROVED

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

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