Add physical server asset details collection

Most of the metadata about the physical servers is stored in associated
asset details entry, which serves as a data source for UI components.

This commit adds default collection for asset details that can be used
to store physical server metadata.

app/models/manager_refresh/inventory_collection_default/physical_infra_manager.rb

@@ -11,5 +11,16 @@ def physical_servers(extra_attributes = {})
 
  attributes.merge!(extra_attributes)
  end
+
+ def physical_server_details(extra_attributes = {})
+ attributes = {
+ :model_class => ::AssetDetail,
+ :association => :physical_server_details,
+ :manager_ref => [:resource],
+ :parent_inventory_collections => [:physical_servers],
+ }
+
+ attributes.merge!(extra_attributes)
+ end
  end
 end