adding arguments for dump based on mailing list.

manage_users.py

 #!/bin/env python
+from mailmanclient import Client
 import os
 import sys
 import argparse
@@ -7,7 +8,6 @@ try:
 except ImportError:
     import simplejson as json
 
-ml.settings[setting] = value
 
 if __name__ == '__main__':
     parser = argparse.ArgumentParser(description="Dump Mailing List based on alias.")
@@ -23,13 +23,13 @@ if __name__ == '__main__':
     parser.add_argument('--listname')
 
     # Add arguments for env variables
-    # parser.add_argument('--core-uri', dest='core_uri',default=CORE_URI)
-    # parser.add_argument('--rest-user', dest='core_user',default=CORE_USER)
-    # parser.add_argument('--rest-password', dest='core_password',default=CORE_PASS)
+    parser.add_argument('--core-uri', dest='core_uri',default=CORE_URI)
+    parser.add_argument('--rest-user', dest='core_user',default=CORE_USER)
+    parser.add_argument('--rest-password', dest='core_password',default=CORE_PASS)
 
     args = parser.parse_args()
 
-    client = Client(CORE_URI, CORE_USER, CORE_PASS)
+    client = Client(args.core_uri, args.core_user, args.core_password)
 
     ml = client.get_list(LIST_NAME)