Add tests & fixes for epp contact

app/models/contact.rb

@@ -2,6 +2,7 @@ require 'deserializers/xml/legal_document'
 
 class Contact < ApplicationRecord
   include Versions # version/contact_version.rb
+  include Roids
   include EppErrors
   include UserEvents
   include Contact::Transferable
@@ -259,10 +260,6 @@ class Contact < ApplicationRecord
     end
   end
 
-  def roid
-    "EIS-#{id}"
-  end
-
   # kind of decorator in order to always return statuses
   # if we use separate decorator, then we should add it
   # to too many places