When an election restart, assume all masters are unknown and candidates for election.

git-svn-id: https://svn.erp5.org/repos/neo/trunk@1548 71dcc9de-d417-0410-9af5-da40c76e7ee4

neo/master/app.py

@@ -141,8 +141,8 @@ class Application(object):
 
             # handle new connected masters
             for node in self.nm.getMasterList():
-                if node.isRunning() or node.isUnknown():
-                    self.unconnected_master_node_set.add(node.getAddress())
+                node.setUnknown()
+                self.unconnected_master_node_set.add(node.getAddress())
 
             # start the election process
             self.primary = None