Merge two loop over connection list in shutdown process.

Packets are sent are next poll(), there is no reason to register first
packets to clients nodes (at most one packet per connection here).

git-svn-id: https://svn.erp5.org/repos/neo/trunk@1731 71dcc9de-d417-0410-9af5-da40c76e7ee4

neo/master/app.py

@@ -521,18 +521,13 @@ class Application(object):
                 continue
             if self.cluster_state == ClusterStates.RUNNING:
                 sys.exit("Application has been asked to shut down")
-            # no more transaction, ask clients to shutdown
-            logging.info("asking all clients to shutdown")
+            logging.info("asking all nodes to shutdown")
             for c in self.em.getConnectionList():
                 node = self.nm.getByUUID(c.getUUID())
                 if node.isClient():
                     node_list = [(node.getType(), node.getAddress(),
                         node.getUUID(), NodeStates.DOWN)]
                     c.notify(Packets.NotifyNodeInformation(node_list))
-            # then ask storages and master nodes to shutdown
-            logging.info("asking all remaining nodes to shutdown")
-            for c in self.em.getConnectionList():
-                node = self.nm.getByUUID(c.getUUID())
                 if node.isStorage() or node.isMaster():
                     node_list = [(node.getType(), node.getAddress(),
                         node.getUUID(), NodeStates.DOWN)]