Public Preview: CNI Overlay for Application Gateway for Containers and AGIC

Load balance workloads with scalability and resilience across AKS services in an Azure CNI Overlay cluster using Application Gateway for Containers and Application Gateway Ingress Controller (AGIC). * **Conserve IP addresses:** Conserve VNet IP address space and support maximum cluster scale with CNI Overlay. * **Control ingress:** Manage cluster ingress from external clients and services to specified services within the private overlay network of the AKS cluster, ensuring that traffic remains within the private overlay network to reduce exposure to external threats and enhance overall security. * **Simplify deployment:** Automatically detect the appropriate network configuration for CNI Overlay or CNI with Application Gateway for Containers and Application Gateway Ingress Controller, requiring no additional configuration. [Learn more](https://learn.microsoft.com/azure/application-gateway/for-containers/container-networking).