Adds the Missing TCP protocol spec to the example fleet

[Rohansjamadagni]

What type of PR is this?

/kind bug

What this PR does / Why we need it:
Adds the missing spec of ports.protocol to leet-tcp.yaml

Which issue(s) this PR fixes:

Closes #2113

Special notes for your reviewer:

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[Rohansjamadagni]

@googlebot I signed it!

[agones-bot]

Build Succeeded 👏

Build Id: 67a480d2-a553-4ed2-bb7d-104f4118f0ea

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

• image: gcr.io/agones-images/agones-controller:1.15.0-323dfdc
• image: gcr.io/agones-images/agones-ping:1.15.0-323dfdc
• Linux C++ SDK (build): agonessdk-1.15.0-323dfdc-linux-arch_64.tar.gz
• SDK Server: agonessdk-server-1.15.0-323dfdc.zip

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

• https://323dfdc-dot-preview-dot-agones-images.appspot.com/

To install this version:

• git fetch https://github.com/googleforgames/agones.git pull/2122/head:pr_2122 && git checkout pr_2122
• helm install ./install/helm/agones --namespace agones-system --name agones --set agones.image.tag=1.15.0-323dfdc

[google-oss-robot]

[APPROVALNOTIFIER] This PR is APPROVED

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

The full list of commands accepted by this bot can be found here.

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Needs approval from an approver in each of these files:

• OWNERS [roberthbailey]

Approvers can indicate their approval by writing /approve in a comment
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[agones-bot]

Build Succeeded 👏

Build Id: e69049fc-e1a8-4bcf-a008-3a62d7b04666

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

• image: gcr.io/agones-images/agones-controller:1.16.0-1951d34
• image: gcr.io/agones-images/agones-ping:1.16.0-1951d34
• Linux C++ SDK (build): agonessdk-1.16.0-1951d34-linux-arch_64.tar.gz
• SDK Server: agonessdk-server-1.16.0-1951d34.zip

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

• https://1951d34-dot-preview-dot-agones-images.appspot.com/

To install this version:

• git fetch https://github.com/googleforgames/agones.git pull/2122/head:pr_2122 && git checkout pr_2122
• helm install ./install/helm/agones --namespace agones-system --name agones --set agones.image.tag=1.16.0-1951d34