return members when admin get address book group

seahub/api2/endpoints/admin/address_book/groups.py

@@ -184,7 +184,20 @@ class AdminAddressBookGroup(APIView):
         for group in groups:
             ret_groups.append(address_book_group_to_dict(group))
 
+        try:
+            members = ccnet_api.get_group_members(group_id)
+        except Exception as e:
+            logger.error(e)
+            error_msg = 'Internal Server Error'
+            return api_error(status.HTTP_500_INTERNAL_SERVER_ERROR, error_msg)
+
+        for m in members:
+            member_info = self._get_address_book_group_memeber_info(request,
+                    m, avatar_size)
+            ret_members.append(member_info)
+
         ret_dict['groups'] = ret_groups
+        ret_dict['members'] = ret_members
 
         if return_ancestors:
             # get ancestor groups and remove last group which is self