CORD-2953 Dockerfile for building Neuton image with ONOS ML2 plugin

Change-Id: I57ebc6ab6a337853765962903dfa0746d2b9082d
diff --git a/extra/Dockerfile.neutron-newton-plus-onos-ml2 b/extra/Dockerfile.neutron-newton-plus-onos-ml2
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+
+# Copyright 2017-present Open Networking Foundation
+#
+# 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.
+
+# Neutron 'newton' image with ONOS ML2 plugin installed
+
+FROM openstackhelm/neutron:newton
+
+RUN apt update && apt install -y git python-pip && \
+    cd /srv && \
+    git clone https://github.com/openstack/networking-onos.git -b stable/newton && \
+    cd networking-onos && \
+    python setup.py install && \
+    cd /srv && \
+    git clone https://github.com/openstack/requirements.git -b stable/newton && \
+    sed -i -e 's/neutron-lib===0.4.0/neutron-lib===1.1.0/g' requirements/upper-constraints.txt && \
+    sudo pip install -U -t /var/lib/openstack/lib/python2.7/site-packages/ -c requirements/upper-constraints.txt neutron-lib && \
+    rm -rf networking-onos requirements && \
+    rm -rf /var/lib/apt/lists/*