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/certificates/server.crt b/netconf/security/certificates/server.crt
new file mode 100644
index 0000000..200597d
--- /dev/null
+++ b/netconf/security/certificates/server.crt
@@ -0,0 +1,21 @@
+-----BEGIN CERTIFICATE-----
+MIIDejCCAmICCQDB3buSyupywzANBgkqhkiG9w0BAQsFADB/MQswCQYDVQQGEwJD
+QTELMAkGA1UECAwCT04xDzANBgNVBAcMBk90dGF3YTEOMAwGA1UECgwFQ2llbmEx
+CzAJBgNVBAsMAkJQMRIwEAYDVQQDDAlraGVuYWlkb28xITAfBgkqhkiG9w0BCQEW
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+MzdaMH8xCzAJBgNVBAYTAkNBMQswCQYDVQQIDAJPTjEPMA0GA1UEBwwGT3R0YXdh
+MQ4wDAYDVQQKDAVDaWVuYTELMAkGA1UECwwCQlAxEjAQBgNVBAMMCWtoZW5haWRv
+bzEhMB8GCSqGSIb3DQEJARYSa251cnNpbXVAY2llbmEuY29tMIIBIjANBgkqhkiG
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+SIb3DQEBCwUAA4IBAQA8TqSLW98Imz7xH9tSWVfs1Rhb7DuEl47vwOY99ocuG/cI
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+e6za7cz+AJcpU2o/rxeS3p0nxrW9cEUSM0vhqBHvTTepe52IThnYbNIMbuhC1+fk
+if8STlOIe3maYc5Drt1njk3lXCPEuOFLTZxpG4qtNSBXPjRj0SqmLBly5QmdEuKc
+wj14dWBntVTvWeO9Z15DZjzLubNF7CJmqlAuRCON
+-----END CERTIFICATE-----