This commit consists of:
1) Ability for the netconf client to retrieve schemas metadata from
   the netconf server
2) Ability for the netconf server to retrieve specific yang schema from
   the netconf server
3) Netconf says Happy New Year 2017

Change-Id: I6552224707607ca6cc1397f2fbf193503bb116a3
diff --git a/netconf/session/nc_connection.py b/netconf/session/nc_connection.py
index d8a2afe..9043584 100644
--- a/netconf/session/nc_connection.py
+++ b/netconf/session/nc_connection.py
@@ -1,6 +1,6 @@
 #!/usr/bin/env python
 #
-# Copyright 2016 the original author or authors.
+# Copyright 2017 the original author or authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -23,8 +23,7 @@
 
 log = structlog.get_logger()
 
-from netconf import MAXSSHBUF
-
+MAXSSHBUF = C.MAXSSHBUF
 
 class NetconfConnection(protocol.Protocol):
     def __init__(self, data=None, avatar=None, max_chunk=MAXSSHBUF):