Added OKE steps in K8S version upgrade template

[kamaljeeti]

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:

Which issue(s) this PR fixes:#4038

Closes #4038

Special notes for your reviewer:

[agones-bot]

Build Succeeded 🥳

Build Id: c128b383-e317-4df4-9b19-ca16bb3431a9

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

• image: us-docker.pkg.dev/agones-images/ci/agones-controller:1.47.0-dev-55f6818
• image: us-docker.pkg.dev/agones-images/ci/agones-extensions:1.47.0-dev-55f6818
• image: us-docker.pkg.dev/agones-images/ci/agones-sdk:1.47.0-dev-55f6818-linux
• image: us-docker.pkg.dev/agones-images/ci/agones-ping:1.47.0-dev-55f6818
• image: us-docker.pkg.dev/agones-images/ci/agones-allocator:1.47.0-dev-55f6818
• Linux C++ SDK (build): agonessdk-1.47.0-dev-55f6818-linux-arch_64.tar.gz
• SDK Server: agonessdk-server-1.47.0-dev-55f6818.zip

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

• https://55f6818-dot-preview-dot-agones-images.appspot.com/

To install this version:

git fetch https://github.com/googleforgames/agones.git pull/4091/head:pr_4091 && git checkout pr_4091
helm install agones ./install/helm/agones --namespace agones-system --set agones.image.registry=us-docker.pkg.dev/agones-images/ci --set agones.image.tag=1.47.0-dev-55f6818

[agones-bot]

Build Succeeded 🥳

Build Id: 7ceb10de-f99b-45c2-a1b1-7f971901bc92

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

• image: us-docker.pkg.dev/agones-images/ci/agones-controller:1.47.0-dev-098da49
• image: us-docker.pkg.dev/agones-images/ci/agones-extensions:1.47.0-dev-098da49
• image: us-docker.pkg.dev/agones-images/ci/agones-sdk:1.47.0-dev-098da49-linux
• image: us-docker.pkg.dev/agones-images/ci/agones-ping:1.47.0-dev-098da49
• image: us-docker.pkg.dev/agones-images/ci/agones-allocator:1.47.0-dev-098da49
• Linux C++ SDK (build): agonessdk-1.47.0-dev-098da49-linux-arch_64.tar.gz
• SDK Server: agonessdk-server-1.47.0-dev-098da49.zip

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

• https://098da49-dot-preview-dot-agones-images.appspot.com/

To install this version:

git fetch https://github.com/googleforgames/agones.git pull/4091/head:pr_4091 && git checkout pr_4091
helm install agones ./install/helm/agones --namespace agones-system --set agones.image.registry=us-docker.pkg.dev/agones-images/ci --set agones.image.tag=1.47.0-dev-098da49

[igooch]

LGTM