Refuse to add more storage nodes when cluster state is not running.

This is because verification handler doesn't implement responses to
questions sent by a storage node after it receives the order to start.

git-svn-id: https://svn.erp5.org/repos/neo/trunk@2382 71dcc9de-d417-0410-9af5-da40c76e7ee4

neo/master/handlers/administration.py

@@ -126,6 +126,7 @@ class AdministrationHandler(MasterHandler):
         pt = app.pt
         cell_list = []
         uuid_set = set()
+        if app.getClusterState() == ClusterStates.RUNNING:
             # take all pending nodes
             for node in nm.getStorageList():
                 if node.isPending():