Add Dockerfile for networking-ovn-metadata-agent

This patch adds a new Dockerfile for the metadata agent in
networking-ovn so that we can have a Kolla image to be deployed in
OVN containerized environments.

Change-Id: I8af4ae921ecca51a99886d5208abeb1a4eb42c83
Signed-off-by: Daniel Alvarez <dalvarez@redhat.com>

docker/neutron/neutron-metadata-agent-ovn/Dockerfile.j2

@@ -0,0 +1,39 @@
+FROM {{ namespace }}/{{ image_prefix }}neutron-base:{{ tag }}
+LABEL maintainer="{{ maintainer }}" name="{{ image_name }}" build-date="{{ build_date }}"
+
+{% block neutron_metadata_agent_ovn_header %}{% endblock %}
+
+{% import "macros.j2" as macros with context %}
+
+{% if install_type == 'binary' %}
+
+    {% if base_distro in ['centos', 'oraclelinux', 'rhel'] %}
+        {% set neutron_metadata_agent_ovn_packages = [
+            'python-networking-ovn-metadata-agent'
+        ] %}
+    {% elif base_distro in ['debian', 'ubuntu'] %}
+        {% set neutron_metadata_agent_ovn_packages = [
+            'python-networking-ovn'
+        ] %}
+    {% endif %}
+
+    {{ macros.install_packages(neutron_metadata_agent_ovn_packages | customizable("packages")) }}
+
+{% elif install_type == 'source' %}
+
+ADD plugins-archive /
+
+    {% set neutron_metadata_agent_ovn_plugins_pip_packages = [
+        '/plugins/*'
+    ] %}
+
+RUN if [ "$(ls /plugins)" ]; then \
+        {{ macros.install_pip(neutron_metadata_agent_ovn_plugins_pip_packages | customizable("pip_packages")) }}; \
+    fi
+
+{% endif %}
+
+{% block neutron_metadata_agent_ovn_footer %}{% endblock %}
+{% block footer %}{% endblock %}
+
+USER neutron

kolla/common/config.py

@@ -565,6 +565,10 @@ SOURCES = {
         'type': 'url',
         'location': ('$tarballs_base/networking-ovn/'
                      'networking-ovn-master.tar.gz')},
+    'neutron-metadata-agent-ovn-plugin-networking-ovn': {
+        'type': 'url',
+        'location': ('$tarballs_base/networking-ovn/'
+                     'networking-ovn-master.tar.gz')},
     'nova-base': {
         'type': 'url',
         'location': ('$tarballs_base/nova/'

releasenotes/notes/new_networking_ovn_metadata_agent_kolla_image-6f87ef59cf62cb8f.yaml

@@ -0,0 +1,6 @@
+---
+features:
+  - |
+    A new agent for metadata API has been introduced in ``networking-ovn``.
+    This agent is to be deployed in compute nodes and, in order to support
+    a containerized deployment, a new Kolla image is created.