This is the initial commit of the netconf server code.  It consists
of the following:
1) The server is built using Twisted Conch
2) It adapted an existing opensource netconf server (https://github.com/choppsv1/netconf)
   to handle some low-level protocols.  The adaptation is mostly around
   using Twisted Conch instead of Python Threads
3) A microservice to interface with Voltha on the SB and Netconf client on
   the NB
4) A set of credentials for the server and clients.  At this time these
   credentials are local and in files.  Additional work is required to
   secure these files
5) A rough-in to handle the rpc requests from Netconf clients
6) Code for initial handshaking is in place (hello)

Change-Id: I1ca0505d0ac35ff06066b107019ae87ae30e38f8
diff --git a/netconf/security/keys/server.key.pub b/netconf/security/keys/server.key.pub
new file mode 100644
index 0000000..ddab57a
--- /dev/null
+++ b/netconf/security/keys/server.key.pub
@@ -0,0 +1 @@
+ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDbl6tRaaAuXQvwqAaNgQGJwWzVDutdT06ewXYx7X+FZjATEisrBNd/8PoZjvqTkFw0CWSamaR4X2qKjr4iiRMZLNSgb2ScIJ8YhObOIcIA3SbvGyb3FeJES1lhbmHJbtRKjREfBdv9mu+UbNtfINvQqdii/JVU+KE+sQ6C286ddkZDmHsev37ezB2ODB2f7GQ7rqDhiv26X6GFMCrJPwJyEW91nGDKmWBul+4NZ3fTymO/TZ5sOYNRCtx6/vxVFAeshY5Bx/oBb1rs5S6zeXXyuMbgPA1gRjG0MSYSBH6ENXAa549XG+dr9v61qlRplP5yS1IaNDI/lUba1HlYw09N vagrant@voltha