Update deployment.yaml to use the fullname helper

[jibsheet]

Issue

We use this as a subchart with an Alias so it throws errors like this

Error: Deployment.apps "aws-load-balancer-controller" is invalid: spec.template.spec.containers[0].name: Invalid value: "awsLoadBalancerController": a lowercase RFC 1123 label must consist of lower case alphanumeric characters or '-', and must start and end with an alphanumeric character (e.g. 'my-name',  or '123-abc', regex used for validation is '[a-z0-9]([-a-z0-9]*[a-z0-9])?')

Description of changes

Checklist

• Added/modified documentation as required (such as the README.md for modified charts)
• Incremented the chart version in Chart.yaml for the modified chart(s)
• Manually tested. Describe what testing was done in the testing section below
• Make sure the title of the PR is a good description that can go into the release notes

Testing

Confirmed helm install works locally with our alias and fullnameOverride set

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