Set service account for VM from config

config.rb

@@ -136,11 +136,12 @@ def self.e2e_test?
   # Lantern
   override :lantern_top_domain, "db.lantern.dev", string
   override :lantern_dns_email, "varik@lantern.dev", string
-  override :lantern_backup_bucket, "lantern-wal-g-backups-dev"
+  override :lantern_backup_bucket, "walg-dev-backups"
   override :e2e_test, "0"
 
   # GCP
-  override :gcp_project_id, "ringed-griffin-394922", string
+  override :gcp_project_id, "lantern-development", string
+  override :gcp_compute_service_account, "339254316100-compute@developer.gserviceaccount.com", string
   optional :gcp_creds_gcr_b64, string
   optional :gcp_creds_logging_b64, string
   optional :gcp_creds_coredumps_b64, string

lib/hosting/gcp_apis.rb

@@ -104,7 +104,7 @@ def create_vm(name, zone, image, ssh_key, user, machine_type, disk_size_gb, labe
       },
       serviceAccounts: [
         {
-          email: "511682212298-compute@developer.gserviceaccount.com",
+          email: Config.gcp_compute_service_account,
           scopes: [
             "https://www.googleapis.com/auth/devstorage.read_only",
             "https://www.googleapis.com/auth/logging.write",
@@ -129,7 +129,8 @@ def create_vm(name, zone, image, ssh_key, user, machine_type, disk_size_gb, labe
 
   def get_vm(vm_name, zone)
     connection = Excon.new(@host[:connection_string], headers: @host[:headers])
-    response = connection.get(path: "/compute/v1/projects/#{@project}/zones/#{zone}/instances/#{vm_name}", expects: 200)
+    response = connection.get(path: "/compute/v1/projects/#{@project}/zones/#{zone}/instances/#{vm_name}", expects: [200, 400, 404])
+    Hosting::GcpApis.check_errors(response)
 
     JSON.parse(response.body)
   end

spec/model/lantern/lantern_timeline_spec.rb

@@ -16,7 +16,7 @@
       expect(lantern_timeline).to receive(:gcp_creds_b64).and_return("test-creds")
       config = {
         gcp_creds_b64: "test-creds",
-        walg_gs_prefix: "gs://lantern-wal-g-backups-dev/pvr1mcnhzd8p0qwwa00tr5cvex"
+        walg_gs_prefix: "gs://walg-dev-backups/pvr1mcnhzd8p0qwwa00tr5cvex"
       }
 
       expect(lantern_timeline.generate_walg_config).to eq(config)