Remove contact's address on domain transfer unless address_processing is enabled

#251

app/models/contact.rb

@@ -578,4 +578,9 @@ class Contact < ActiveRecord::Base
     log
   end
 
+  def remove_address
+    self.class.address_attribute_names.each do |attr_name|
+      self[attr_name.to_sym] = nil
+    end
+  end
 end

app/models/epp/domain.rb

@@ -648,6 +648,7 @@ class Epp::Domain < Domain
     oc.copy_from_id = c.id
     oc.generate_code
     oc.domain_transfer = true
+    oc.remove_address unless Contact.address_processing?
     oc.save!(validate: false)
     oc
   end

spec/models/contact_spec.rb

@@ -448,4 +448,19 @@ RSpec.describe Contact, db: false do
       expect(contact.errors).to have_key(:country_code)
     end
   end
+
+  describe '#remove_address' do
+    let(:contact) { described_class.new(city: 'test',
+                                        street: 'test',
+                                        zip: 'test',
+                                        country_code: 'test',
+                                        state: 'test')
+    }
+    subject(:address_removed) { contact.attributes.slice(*described_class.address_attribute_names).compact.empty? }
+
+    it 'removes address attributes' do
+      contact.remove_address
+      expect(address_removed).to be_truthy
+    end
+  end
 end