magento-engcom/import-export-improvements#54: function getBehavior extended with BEHAVIOUR_ADD_UPDATE and BEHAVIOR_CUSTOM

Author: stani

app/code/Magento/ImportExport/Model/Import/Entity/AbstractEntity.php

@@ -554,7 +554,9 @@ public function getBehavior()
             $this->_parameters['behavior']
         ) ||
             $this->_parameters['behavior'] != ImportExport::BEHAVIOR_APPEND &&
+            $this->_parameters['behavior'] != ImportExport::BEHAVIOR_ADD_UPDATE &&
             $this->_parameters['behavior'] != ImportExport::BEHAVIOR_REPLACE &&
+            $this->_parameters['behavior'] != ImportExport::BEHAVIOR_CUSTOM &&
             $this->_parameters['behavior'] != ImportExport::BEHAVIOR_DELETE
         ) {
             return ImportExport::getDefaultBehavior();