Update gateway service to actually use service annotations (#36384)
Update gateway service to actually use service annotations (#36384)

* Update service.yaml

else the chart is barely usable in any public clouds

* Update manifests/charts/gateway/templates/service.yaml

Co-authored-by: John Howard <d864760d805af0f2f245f85d18382dd184bb0c60@google.com>

Co-authored-by: John Howard <d864760d805af0f2f245f85d18382dd184bb0c60@google.com>
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