scalability_test: fix wrong parameter name

scalability_test/__init__.py

@@ -31,7 +31,7 @@ class WendelinERP5_scalability():
   def getScalabilityTestPassword(self, instance_information_dict):
     return instance_information_dict["password"]
 
-  def getBootstrapScalabilityTestUrl(self, count=0, instance_information_dict_dict=None, **kw):
+  def getBootstrapScalabilityTestUrl(self, count=0, instance_information_dict=None, **kw):
     bootstrap_url = "http://%s:%s@%s/erp5" % (instance_information_dict['user'],
                                     instance_information_dict['password'],
                                     instance_information_dict['zope-address'])