Translatable string "on" is too short to translate

[Akihiro Motoki]

The following string is too short to translate and string concatenation is used.

#: dashboards/project/instances/templates/instances/_detail_overview.html:135
#: dashboards/project/volumes/templates/volumes/volumes/_detail_overview.html:43
msgid "on"
msgstr ""

openstack_dashboard/dashboards/project/instances/templates/instances/_detail_overview.html

            <a href="{% url 'horizon:project:volumes:volumes:detail' volume.id %}">
            {% if volume.name %}
                {{ volume.name }}
            {% else %}
                {{ volume.id }}
            {% endif %}
            </a>
            <span> {% trans "on" %} {{ volume.device }}</span>

openstack_dashboard/dashboards/project/volumes/templates/volumes/volumes/_detail_overview.html

        {% url 'horizon:project:instances:detail' attachment.server_id as instance_url%}
        <a href="{{ instance_url }}">{{ attachment.instance.name }}</a>
        <span> {% trans "on" %} {{ attachment.device }}</span>

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/129448

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/129448
Committed: https://git.openstack.org/cgit/openstack/horizon/commit/?id=1eb0a6a711930f6deb6f807cf30e85baca671c33
Submitter: Jenkins
Branch: master

commit 1eb0a6a711930f6deb6f807cf30e85baca671c33
Author: Akihiro Motoki <email address hidden>
Date: Sun Oct 19 07:48:21 2014 +0900

    Remove string concatenation related to volume attachment

    Translatable string "on" is a part of string concatenation
    and it makes difficult to translate it properly.

    Change-Id: Ib2bf65791899a3c69087749d3a5fcf5061568b5d
    Closes-Bug: #1382874