Support setting network_plugin (Azure#76)

Author: mcanevet

README.md

@@ -36,6 +36,7 @@ module "aks" {
   client_id                        = "your-service-principal-client-appid"
   client_secret                    = "your-service-principal-client-password"
   prefix                           = "prefix"
+  network_plugin                   = "azure"
   vnet_subnet_id                   = module.network.vnet_subnets[0]
   os_disk_size_gb                  = 50
   enable_kube_dashboard            = true

main.tf

@@ -96,6 +96,10 @@ resource "azurerm_kubernetes_cluster" "main" {
     }
   }
 
+  network_profile {
+    network_plugin = var.network_plugin
+  }
+
   tags = var.tags
 }
 

test/fixture/main.tf

@@ -30,6 +30,7 @@ module aks {
   resource_group_name             = azurerm_resource_group.main.name
   client_id                       = var.client_id
   client_secret                   = var.client_secret
+  network_plugin                  = "azure"
   vnet_subnet_id                  = azurerm_subnet.test.id
   os_disk_size_gb                 = 60
   enable_http_application_routing = true

variables.tf

@@ -139,3 +139,9 @@ variable "rbac_aad_server_app_secret" {
   type        = string
   default     = null
 }
+
+variable "network_plugin" {
+  description = "Network plugin to use for networking."
+  type        = string
+  default     = "kubenet"
+}