Additional Front end ip address

[wcarty]

Please add support for additional frontend floating public IP addresses to the module. These additional frontend IP addresses are necessary in situations where one-to-one NAT is required to enable access to hosted services that are protected by the firewall.

example code

resource "azurerm_public_ip" "public-ip-lb" {
count = var.deployment_mode != "Internal" ? var.number_of_public_ips : 0
name = "${var.vmss_name}-app-${count.index + 1}"
location = module.common.resource_group_location
resource_group_name = module.common.resource_group_name
allocation_method = var.vnet_allocation_method
sku = var.sku
domain_name_label = "${lower(var.vmss_name)}-${random_id.random_id.hex}-${count.index + 1}"
}

resource "azurerm_lb" "frontend-lb" {
count = var.deployment_mode != "Internal" ? 1 : 0
depends_on = [azurerm_public_ip.public-ip-lb]
name = "frontend-lb"
location = module.common.resource_group_location
resource_group_name = module.common.resource_group_name
sku = var.sku

dynamic "frontend_ip_configuration" {
for_each = azurerm_public_ip.public-ip-lb
content {
name = "${var.vmss_name}-app-${frontend_ip_configuration.key + 1}"
public_ip_address_id = frontend_ip_configuration.value.id
}
}

}