Add terraform files and config for GCP

Signed-off-by: Somtochi Onyekwere <somtochionyekwere@gmail.com>

tests/integration/terraform/gcp/main.tf

@@ -0,0 +1,49 @@
+provider "google" {
+  project = var.gcp_project_id
+  region  = var.gcp_region
+  zone    = var.gcp_zone
+}
+
+resource "random_pet" "suffix" {}
+
+data "google_kms_key_ring" "keyring" {
+  name     = var.gcp_keyring
+  location = "global"
+}
+
+data "google_kms_crypto_key" "my_crypto_key" {
+  name     = var.gcp_crypto_key
+  key_ring = data.google_kms_key_ring.keyring.id
+}
+
+data "google_project" "project" {
+}
+
+module "gke" {
+  source = "git::https://github.com/fluxcd/test-infra.git//tf-modules/gcp/gke"
+  name   = "flux-e2e-${random_pet.suffix.id}"
+  tags   = var.tags
+}
+
+module "gcr" {
+  source = "git::https://github.com/fluxcd/test-infra.git//tf-modules/gcp/gcr"
+  name   = "flux-e2e-${random_pet.suffix.id}"
+  tags   = var.tags
+}
+
+resource "google_sourcerepo_repository" "fleet-infra" {
+  name = "fleet-infra-${random_pet.suffix.id}"
+}
+
+resource "google_sourcerepo_repository" "application" {
+  name = "application-${random_pet.suffix.id}"
+}
+
+resource "google_kms_key_ring_iam_binding" "key_ring" {
+  key_ring_id = data.google_kms_key_ring.keyring.id
+  role        = "roles/cloudkms.cryptoKeyEncrypterDecrypter"
+
+  members = [
+    "serviceAccount:${data.google_project.project.number}-compute@developer.gserviceaccount.com",
+  ]
+}