Exclude test from being run as until LDAP server is available this test will alway fail.

tests/__init__.py

@@ -58,6 +58,7 @@ class ERP5(_ERP5):
          or test_case.startswith('testFunctional') \
          or test_case in ('testPerformance', 'testSimulationPerformance',
                           'testDmsWithFlare', # XXX(Seb), put it back ASAP
+                          'testERP5LdapCatalog', # XXX (Ivan), until LDAP server is available this test will alway fail
                           'testERP5eGov', # it is not maintained any more
                           'testAccounting_l10n_fr_m9'):
         continue