Pinned cloudooo revision for ERP5

Keep the cloudooo revision fix to prevent inconsistent test result outcomes
during the cloudooo development. This revision adopted is the same as last
stable report for erp5 and cloudooo test reports.

stack/erp5.cfg

@@ -406,6 +406,10 @@ extra-paths =
   ${products-deps:location}
   ${erp5:location}
 
+[cloudooo-repository]
+branch = master
+revision = 4cdfffb3f81a0fdbb7b372d92de664e716f12d4b
+
 [mysql-python]
 python = python2.6