testnode: give project title to runTestSuite

This hopefully fix the random issue of having test results not linked to
a project. Indeed, distributor/createTestResult was called in two different
times:
- by the testnode, with the project title
- by the runTestSuiteCommand, without the project title. This was
  not an issue most of the time, since the test result is already
  created. But if it was not there (like due to a cancelled test),
  a test result without project was created

erp5/util/testnode/UnitTestRunner.py

@@ -155,6 +155,7 @@ class UnitTestRunner(object):
         ('--frontend_url', lambda: config['frontend_url']),
         ('--node_quantity', lambda: config['node_quantity']),
         ('--xvfb_bin', lambda: path('xvfb', 'xserver/bin/Xvfb')),
+        ('--project_title', lambda: node_test_suite.project_title),
         ):
       if option in supported_parameter_set:
         invocation_list += option, value()