Fixed terraform validate error

Author: shibayan

main.tf

@@ -1,3 +1,13 @@
+provider "azurerm" {
+  features {}
+}
+
+terraform {
+  required_providers {
+    azurerm = "~> 2.0"
+  }
+}
+
 resource "azurerm_storage_account" "storage" {
   name                      = var.storage_account_name
   resource_group_name       = var.resource_group_name
@@ -34,7 +44,7 @@ resource "azurerm_function_app" "function" {
   location                   = var.location
   app_service_plan_id        = azurerm_app_service_plan.serverfarm.id
   storage_account_name       = azurerm_storage_account.storage.name
-  storage_account_access_key = azurerm_storage_account.storage.primaryaccess_key
+  storage_account_access_key = azurerm_storage_account.storage.primary_access_key
   version                    = "~3"
   https_only                 = true
   client_affinity_enabled    = false

outputs.tf

@@ -1,9 +1,9 @@
 output "principal_id" {
-  value       = azurerm_function_app.function.identity.principal_id
+  value       = azurerm_function_app.function.identity[0].principal_id
   description = "Created Managed Identity Principal ID"
 }
 
 output "tenant_id" {
-  value       = azurerm_function_app.function.identity.tenant_id
+  value       = azurerm_function_app.function.identity[0].tenant_id
   description = "Created Managed Identity Tenant ID"
 }

variables.tf

@@ -18,14 +18,14 @@ variable "app_insights_name" {
   description = "The name of the Application Insights to create."
 }
 
-variable "location" {
+variable "resource_group_name" {
   type        = string
-  description = "Azure region to create resources."
+  description = "Resource group name to be added."
 }
 
-variable "resource_group_name" {
+variable "location" {
   type        = string
-  description = "Resource group name to be added."
+  description = "Azure region to create resources."
 }
 
 variable "vault_uri" {