Initial put

quickstart/101-azure-functions/variables.tf

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+variable "resource_group_name_prefix" {
+  type        = string
+  default     = "rg"
+  description = "Prefix of the resource group name that's combined with a random ID so name is unique in your Azure subscription."
+}
+
+variable "resource_group_location" {
+  type        = string
+  default     = "eastus"
+  description = "Location of the resource group."
+}
+
+variable "appName" {
+  type        = string
+  default     = "fnapp${random_string.unique_id.result}"
+  description = "The name of the function app that you wish to create."
+}
+
+variable "storageAccountType" {
+  type        = string
+  default     = "Standard_LRS"
+  validation {
+    condition     = contains(["Standard_LRS", "Standard_GRS", "Standard_RAGRS"], var.storageAccountType)
+    error_message = "Must be one of Standard_LRS, Standard_GRS, Standard_RAGRS"
+  }
+  description = "Storage Account type"
+}
+
+variable "appInsightsLocation" {
+  type        = string
+  description = "Location for Application Insights"
+}
+
+variable "runtime" {
+  type        = string
+  default     = "node"
+  validation {
+    condition     = contains(["node", "dotnet", "java"], var.runtime)
+    error_message = "Must be one of node, dotnet, java"
+  }
+  description = "The language worker runtime to load in the function app."
+}