charts/grr Implement L4 Loadbalancer alternative

[wajihyassine]

Name and Version

charts/grr 1.0.3

What is the problem this feature will solve?

It is difficult to use the GRR helm chart in a real world scenario without using the GRR cloud documentation and the provided steps to properly setup an L7 loadbalancer with mTLS utilizing terraform as the provisioner. This is due to the K8s API standard not supporting the provisioning of mTLS for L7 LBs. Listed as a restriction in https://cloud.google.com/kubernetes-engine/docs/how-to/deploying-gateways#limitations

What is the feature you are proposing to solve the problem?

Allow for flexibility with the GRR Helm chart deployment to deploy an L4 loadbalancer as an alternative using the K8s Ingress API. This will allow us to then to merge the GRR helm chart as part of the main OSDFIR Infrastructure helm chart as a usable chart. For consistency with the other charts, if we could follow a similar implementation to something like https://github.com/google/osdfir-infrastructure/blob/main/charts/timesketch/templates/ingress.yaml until we move over to the Gateway API method.

Ideally would be nice to have this feature in before the end of the year, > December 31, 2024.

What alternatives have you considered?

No response