This commit consists of:
1) Dockerizing the netconf server
2) Update proto2yang to support module imports
3) Provide a set of yang modules derived from the proto files in voltha.
   These files as well as the slight mmodifications to the proto files are
   provided in the experiments/netconf/proto2yang directory
4) Code to automatically pull proto files from voltha into the netconf server,
   compiles them and produce the yang equivalent files.
5) Add a getvoltha netconf API to provide voltha state information (basic at
   this time).  There is potential to make this generic once we experiment
   with additional APIs

Change-Id: I94f3a1f871b8025ad675d5f9b9b626d1be8b8d36
diff --git a/Dockerfile.netconf b/Dockerfile.netconf
new file mode 100644
index 0000000..b46a822
--- /dev/null
+++ b/Dockerfile.netconf
@@ -0,0 +1,44 @@
+#!/usr/bin/env python
+#
+# Copyright 2016 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.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+FROM cord/voltha-base
+
+MAINTAINER Zsolt Haraszti <zharaszt@ciena.com>
+MAINTAINER Ali Al-Shabibi <ali.al-shabibi@onlab.us>
+MAINTAINER Nathan Knuth   <nathan.knuth@tibitcom.com>
+
+# Install protoc version 3.0.0; this is not yet the supported
+# version on xenial, so we need to "backport" it
+RUN apt-get update && \
+    apt-get install -y zlib1g-dev wget && \
+    wget http://ftp.us.debian.org/debian/pool/main/p/protobuf/libprotoc10_3.0.0-9_amd64.deb && \
+    wget http://ftp.us.debian.org/debian/pool/main/p/protobuf/libprotobuf-lite10_3.0.0-9_amd64.deb && \
+    wget http://ftp.us.debian.org/debian/pool/main/p/protobuf/libprotobuf-dev_3.0.0-9_amd64.deb && \
+    wget http://ftp.us.debian.org/debian/pool/main/p/protobuf/libprotobuf10_3.0.0-9_amd64.deb && \
+    wget http://ftp.us.debian.org/debian/pool/main/p/protobuf/protobuf-compiler_3.0.0-9_amd64.deb && \
+    dpkg -i *.deb && \
+    protoc --version && \
+    rm -f *.deb
+
+# Bundle app source
+RUN mkdir /netconf && touch /netconf/__init__.py
+ENV PYTHONPATH=/netconf
+COPY common /netconf/common
+COPY netconf /netconf/netconf
+
+# Exposing process and default entry point
+CMD ["python", "netconf/netconf/main.py"]