Feature to configure request size limit

[sanjaypjana]

I am migrating from a nginx ingress controller to a Google Ingress controller, Upon which i found GKE ingress does not have a feature to limit the request size whereas we can implement the same on a nginx ingress via (nginx.ingress.kubernetes.io/proxy-body-size). Can you please add this feature to GKE ingress (or) if there is any other way of implementing this via a backendconfig on GKE environment. It would be of great help if someone could look into this issue.