Update models with changes in test

lib/liudesk_cmdb/models/hardware.rb

@@ -16,7 +16,7 @@ module LiudeskCMDB::Models
       :purchase_date, :purchase_order, :purchase_order_reference, :purchase_price,
       :delivery_date, :supplier_asset_id, :warranty_enddate, :service_agreement_enddate,
       :mac_and_network_access_roles, :make, :model, :serial_number, :description, :hostname,
-      :bios_uuid
+      :bios_uuid, :external_documentation_link, :group_or_lab, :contact_information, :misc_information
 
     field_attributes :hostname, name: "hostName"
     field_attributes :created_date, convert: Time

lib/liudesk_cmdb/models/linux_client.rb

@@ -25,7 +25,8 @@ module LiudeskCMDB::Models
       :hostname, :division, :asset_owner, :certificate_information,
       :network_access_role, :hardware_id,
       :operating_system_type, :operating_system, :operating_system_install_date,
-      :ad_creation_date, :active_directory_ou, :client_classification
+      :ad_creation_date, :active_directory_ou, :client_classification,
+      :management_system, :management_system_id, :network_certificate_ca
 
     field_attributes :hostname, name: "hostName"
     field_attributes :hardware_id, name: "hardwareID"