Allow to configure LoadBalancerClass for service in gateway helm chart

[Legion2]

Describe the feature request
I want to set the spec.loadBalancerClass of the Service in the gateway helm chart, see Specifying class of load balancer implementation.

Describe alternatives you've considered
Use annotations on the Service to select load balancer implementation.

Affected product area (please put an X in all that apply)

[ ] Docs
[x] Installation
[x] Networking
[ ] Performance and Scalability
[ ] Extensions and Telemetry
[ ] Security
[ ] Test and Release
[ ] User Experience
[ ] Developer Infrastructure

Affected features (please put an X in all that apply)

[ ] Multi Cluster
[ ] Virtual Machine
[ ] Multi Control Plane

Additional context
The AWS Load Balancer Controller supports this field to select the load balancer controller instead of the in-tree controller. The spec.loadBalancerClass field was added in kubernetes v1.22.

[howardjohn]

We cannot add an option for every single field in Kubernetes to the charts. If you want to configure advanced fields, i recommend following steps like https://docs.solo.io/gloo-edge/latest/installation/gateway/kubernetes/helm_advanced/

[istio-policy-bot]

🚧 This issue or pull request has been closed due to not having had activity from an Istio team member since 2022-05-23. If you feel this issue or pull request deserves attention, please reopen the issue. Please see this wiki page for more information. Thank you for your contributions.

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