Disable transactions on spec for Geo::RepositorySyncWorker

spec/workers/geo/repository_sync_worker_spec.rb

 require 'spec_helper'
 
-describe Geo::RepositorySyncWorker, :geo do
+# Disable transactions via :truncate method because a foreign table
+# can't see changes inside a transaction of a different connection.
+describe Geo::RepositorySyncWorker, :geo, :truncate do
   include ::EE::GeoHelpers
 
-  set(:primary) { create(:geo_node, :primary, host: 'primary-geo-node') }
-  set(:secondary) { create(:geo_node) }
-  set(:synced_group) { create(:group) }
-  set(:project_in_synced_group) { create(:project, group: synced_group) }
-  set(:unsynced_project) { create(:project) }
+  let(:secondary) { create(:geo_node) }
+  let(:synced_group) { create(:group) }
+  let!(:project_in_synced_group) { create(:project, group: synced_group) }
+  let!(:unsynced_project) { create(:project) }
 
   subject { described_class.new }