added cluster master connection log message to cluster worker

--HG--
extra : convert_revision : svn%3Ab85faa78-f9eb-468e-a121-7cced6da292c%40325

scrapy/branches/cluster-refactor/scrapy/contrib/pbcluster/worker/manager.py

@@ -135,6 +135,7 @@ class ClusterWorker(pb.Root):
         
     def remote_set_master(self, master):
         """Set the master for this worker"""
+        log.msg("ClusterWorker: ClusterMaster connected from %s:%s" % master.broker.transport.client)
         self.__master = master
         return self.status()