<NME> postfix_maps.py
<BEF> ADDFILE
<MSG> wip: command-line management tool

Splitting commands into separate files.

see #314

<DFF> @@ -0,0 +1,8 @@
+
+from modoboa.core.management import Command
+
+class PostfixMapsCommand(Command):
+    def __init__(self):
+        super(PostfixMapsCommand, self).__init__()
+        self._parser.add_argument('--dbtype', type=str, choices=['mysql', 'postgres'],
+                                  help='The database type you use')

wip: command-line management tool