Migrate epp_sessions.data to user_id

#700

db/migrate/20180207071528_extract_user_id_from_epp_sessions_data.rb

@@ -0,0 +1,10 @@
+class ExtractUserIdFromEppSessionsData < ActiveRecord::Migration
+  def change
+    EppSession.all.each do |epp_session|
+      user_id = Marshal.load(::Base64.decode64(epp_session.data_before_type_cast))[:api_user_id]
+      user = ApiUser.find(user_id)
+      epp_session.user = user
+      epp_session.save!
+    end
+  end
+end

db/migrate/20180207072139_remove_epp_sessions_data.rb

@@ -0,0 +1,5 @@
+class RemoveEppSessionsData < ActiveRecord::Migration
+  def change
+    remove_column :epp_sessions, :data, :string
+  end
+end