[Buildkite] Update terraform ec provider for Cloud E2E tests step (#3249)

Update terraform provider used to create cloud deployments in CI
up to version 0.9.0. This terraform provider is used in the Cloud E2E
test step.

Author: mrodm

.buildkite/pipeline.yml

@@ -9,7 +9,7 @@ env:
   DOCKER_IMAGE_LATEST_TAG: "latest" # needs to rename for rollback
   DOCKER_IMAGE_GIT_TAG: "${BUILDKITE_BRANCH}" # needs to rename for rollback
   GO_AGENT_IMAGE: "golang:${GO_VERSION}"
-  TERRAFORM_VERSION: "1.6.3"
+  TERRAFORM_VERSION: "1.6.4"
 
 steps:
   - group: "Check and build"

dev-tools/cloud/terraform/main.tf

@@ -4,7 +4,7 @@ terraform {
   required_providers {
     ec = {
       source  = "elastic/ec"
-      version = "0.5.1"
+      version = "0.9.0"
     }
   }
 }
@@ -58,12 +58,16 @@ resource "ec_deployment" "deployment" {
     "creator" = var.creator
 }
 
-  elasticsearch {}
+  elasticsearch = {
+    hot = {
+      autoscaling = {}
+    }
+  }
 
-  kibana {}
+  kibana = {}
 
-  integrations_server {
-    config {
+  integrations_server = {
+    config = {
       docker_image = local.docker_image_ea
     }
   }

dev-tools/cloud/terraform/outputs.tf

@@ -16,16 +16,16 @@ output "elasticsearch_password" {
 }
 
 output "elasticsearch_url" {
-  value       = ec_deployment.deployment.elasticsearch.0.https_endpoint
+  value       = ec_deployment.deployment.elasticsearch.https_endpoint
   description = "The secure Elasticsearch URL"
 }
 
 output "kibana_url" {
-  value       = ec_deployment.deployment.kibana.0.https_endpoint
+  value       = ec_deployment.deployment.kibana.https_endpoint
   description = "The secure Kibana URL"
 }
 
 output "fleet_url" {
-  value       = ec_deployment.deployment.integrations_server.0.fleet_https_endpoint
+  value       = ec_deployment.deployment.integrations_server.endpoints != null ? ec_deployment.deployment.integrations_server.endpoints.fleet : ""
   description = "The secure Fleet URL"
 }