by default list show accouts

cccli/command.py

@@ -162,7 +162,7 @@ class Command(object):
     def cmd_list(self, argv):
         '''List objects'''
         if len(argv) == 1:
-            argv.append("")
+            argv.append("a")
         items = self.cli.rpc.list(str.join("", argv[1:]))
         for item in items:
             pprint.pprint(item)