Fix --max-errors script parameter.

It should be set according the number of repeats and benchmark suites if the
number of errors is greater to report errors properly to the control process.

erp5/util/benchmark/performance_tester.py

@@ -153,6 +153,11 @@ class PerformanceTester(object):
       object_benchmark_suite_list.append(ArgumentType.objectFromModule(benchmark_suite,
                                                                        callable_object=True))
 
+    if namespace.repeat > 0:
+      namespace.max_error_number = \
+          min(len(namespace.benchmark_suite_list) * namespace.repeat,
+              namespace.max_error_number)
+
     namespace.benchmark_suite_name_list = namespace.benchmark_suite_list
     namespace.benchmark_suite_list = object_benchmark_suite_list