Update fleetautoscaler e2e certs

[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

What this PR does / Why we need it:

Looks like they expired recently. Renewing them for 18 months.

Which issue(s) this PR fixes:

Unblocks CI

Special notes for your reviewer:

I thought about trying to generate the cert dynamically each time, but it seemed like more work than generating the new cert.

[agones-bot]

Build Succeeded 👏

Build Id: 9ae28cf9-64dc-4ad7-a4d2-8d2d9cf8775d

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

• image: gcr.io/agones-images/agones-controller:1.23.0-c56621f
• image: gcr.io/agones-images/agones-ping:1.23.0-c56621f
• Linux C++ SDK (build): agonessdk-1.23.0-c56621f-linux-arch_64.tar.gz
• SDK Server: agonessdk-server-1.23.0-c56621f.zip

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

• https://c56621f-dot-preview-dot-agones-images.appspot.com/

To install this version:

• git fetch https://github.com/googleforgames/agones.git pull/2541/head:pr_2541 && git checkout pr_2541
• helm install ./install/helm/agones --namespace agones-system --name agones --set agones.image.tag=1.23.0-c56621f

[google-oss-prow]

[APPROVALNOTIFIER] This PR is APPROVED

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

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• OWNERS [markmandel,roberthbailey]

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