Add legacy domain history model, remove some dead code, fix domain update xml #2693

app/models/depp/domain.rb

@@ -228,9 +228,9 @@ module Depp
 
         {
           name: { value: domain_params[:name] },
-          chg: chg,
           add: add_arr,
-          rem: rem_arr
+          rem: rem_arr,
+          chg: chg
         }
       end
       # rubocop: enable Metrics/PerceivedComplexity

app/models/domain.rb

@@ -501,10 +501,6 @@ class Domain < ActiveRecord::Base
     (errors.keys - assoc_errors).empty?
   end
 
-  def statuses_tab_valid?
-    !errors.keys.any? { |x| x.match(/domain_statuses/) }
-  end
-
   ## SHARED
 
   def name_in_wire_format

app/models/legacy/domain.rb

@@ -11,5 +11,6 @@ module Legacy
     has_many :dnskeys, foreign_key: :keysetid, primary_key: :keyset
     has_many :domain_contact_maps, foreign_key: :domainid
     has_many :nsset_contact_maps, foreign_key: :nssetid, primary_key: :nsset
+    has_many :domain_histories, foreign_key: :id
   end
 end

app/models/legacy/domain_history.rb

@@ -0,0 +1,7 @@
+module Legacy
+  class DomainHistory < Db
+    self.table_name = :domain_history
+
+    belongs_to :domain, foreign_key: :id
+  end
+end