[API] Test Runner: Returns API response object when performing internal

Author: picandocodigo

elasticsearch-api/api-spec-testing/test_file/action.rb

@@ -160,7 +160,7 @@ def perform_internal(method, args, client, es_version)
           path = '_internal/_health'
           body = args.delete('body')
         end
-        @response = client.perform_request(http, path, args, body)
+        @response = Elasticsearch::API::Response.new(client.perform_request(http, path, args, body))
         client
       end