feat: convert Terraform configuration from plain files to modules (#1054)

Replace 'loging' with 'login' in tutorial and README instructions and adds "create" command in markdown. (#1047)
Fixes errors (#1045) and refactors use of kustomize path in CLI.
Makes GKE+ASM provisioning a module.
Makes Online Boutique provisioning a module.
Creates a new 'main.tf' TF configuration to provision modules sequentially, because of the hard dependency there is no effective way to paralelize it.
Refactors "online-boutique" to replace with "microservices-demo".

Author: minherz

provisioning/kustomize/online-boutique/kustomization.yaml renamed to provisioning/kustomize/microservices-demo/kustomization.yaml

@@ -33,6 +33,7 @@ SCRIPT_DIR="$(realpath "$(dirname "${0}")")"; readonly SCRIPT_DIR
 SANDBOX_VERSION="$(tr -d '\n' < "${SCRIPT_DIR}/version.txt")"; readonly SANDBOX_VERSION
 SANDBOX_SESSION="${SANDBOX_SESSION:-$(python3 -c 'import uuid; print(uuid.uuid4())')}"; readonly SANDBOX_SESSION
 CLOUD_OPS_SANDBOX_DISABLE_TELEMETRY="${CLOUD_OPS_SANDBOX_DISABLE_TELEMETRY:-}"; readonly CLOUD_OPS_SANDBOX_DISABLE_TELEMETRY
+MICROSERVICE_DEMO_PATH="/kustomize/microservices-demo/"; readonly MICROSERVICE_DEMO_PATH
 AGCLOUD=""
 ATERRAFORM=""
 
@@ -472,7 +473,7 @@ configure_terraform_input_vars() {
 state_bucket_name = "${TF_BUCKET_NAME}"
 state_prefix = "${TERRAFORM_PREFIX}"
 gcp_project_id = "${PROJECT_ID}"
-filepath_manifest = "${SCRIPT_DIR}/kustomize/online-boutique/" 
+filepath_manifest = "${SCRIPT_DIR}${MICROSERVICE_DEMO_PATH}" 
 EOF
 )
 
@@ -494,7 +495,7 @@ EOF
 }
 
 configure_kustomization() {
-  KUSTOMIZE_FILE="${SCRIPT_DIR}/kustomize/online-boutique/kustomization.yaml"; readonly KUSTOMIZE_FILE
+  KUSTOMIZE_FILE="${SCRIPT_DIR}${MICROSERVICE_DEMO_PATH}kustomization.yaml"; readonly KUSTOMIZE_FILE
   cp "${KUSTOMIZE_FILE}" "${KUSTOMIZE_FILE}.origin" > /dev/null
   local SED_EXPRESSION; SED_EXPRESSION=""
 

provisioning/sandboxctl

@@ -112,11 +112,15 @@ resource "google_monitoring_slo" "service_latency" {
   ]
 }
 
+data "google_project" "info" {
+  project_id = var.gcp_project_id
+}
+
 module "slo_service" {
   count  = length(local.slo_services)
   source = "./slo_service"
 
-  project_number = var.gcp_project_number
+  project_number = data.google_project.info.number
   name           = local.slo_services[count.index].id
 }