Bring random_email and random description from spree_core factories

spec/factories.rb

@@ -1,6 +1,9 @@
 require 'ffaker'
 
 FactoryBot.define do
+  sequence(:random_description) { Faker::Lorem.paragraphs(1 + Kernel.rand(5)).join("\n") }
+  sequence(:random_email)       { Faker::Internet.email }
+
   factory :classification, class: Spree::Classification do
   end