Public preview: Private Application Gateway v2

Application Gateway v2 is introducing a collection of new capabilities to further enable you to control network exposure using Application Gateway v2 skus. The following capabilities are now possible for Application Gateway v2 skus: * Private IP only frontend configuration (elimination of Public IP) * Enhanced control over Network Securtiy Groups * Eliminate GatewayManager service tag requirement * Enable definition of Deny All Outbound rule * Enhanced control over Route Table rules * Forced Tunelling Support (learning of 0.0.0.0/0 route via BGP) * Route Table rule of 0.0.0.0/0 next hop Virtual Appliance [Learn more about deploying Application Gateway privately](https://learn.microsoft.com/azure/application-gateway/application-gateway-private-deployment). * Application Gateway * Features * Security * [ Application Gateway](https://azure.microsoft.com/en-gb/products/application-gateway/)