v2: read limit for list from --limit in shell

Previously this was read from the --page-size argument, which lead to
incorrect behaviour.

Change-Id: I08ecda95eca0ff524e28a1d5371ce6c73dfc548e
Closes-Bug: #1429088

glanceclient/v2/shell.py

@@ -138,7 +138,7 @@ def do_image_list(gc, args):
 
     kwargs = {'filters': filters}
     if args.limit is not None:
-        kwargs['limit'] = args.page_size
+        kwargs['limit'] = args.limit
     if args.page_size is not None:
         kwargs['page_size'] = args.page_size