Exclude 'failed' setting in case when image not found in DecortController.virt_image_find method

module_utils/decort_utils.py

@@ -1448,7 +1448,6 @@ class DecortController(object):
                     if full_match:
                         return image_record['id'], image_record
 
-        self.result['failed'] = True
         self.result['msg'] = ("Failed to find virtual OS image by name '{}', SEP ID {}, pool '{}' for "
                               "account ID '{}'.").format(virt_name,
                                                          sepid, pool,