Release 1.16.0

[roberthbailey]

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:

1.16.0 release.

Which issue(s) this PR fixes:
Work on #2183

Special notes for your reviewer:

[google-oss-robot]

[APPROVALNOTIFIER] This PR is APPROVED

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

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[agones-bot]

Build Succeeded 👏

Build Id: 0897f478-8066-4898-a12d-36b6b04cf602

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

• image: gcr.io/agones-images/agones-controller:1.16.0-98699cd
• image: gcr.io/agones-images/agones-ping:1.16.0-98699cd
• Linux C++ SDK (build): agonessdk-1.16.0-98699cd-linux-arch_64.tar.gz
• SDK Server: agonessdk-server-1.16.0-98699cd.zip

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

• https://98699cd-dot-preview-dot-agones-images.appspot.com/

To install this version:

• git fetch https://github.com/googleforgames/agones.git pull/2184/head:pr_2184 && git checkout pr_2184
• helm install ./install/helm/agones --namespace agones-system --name agones --set agones.image.tag=1.16.0-98699cd