Fix Jenkins translation jobs

The jobs nova-propose-translation-update and
nova-upstream-translation-update do not update from
transifex since our po files contain duplicate entries where
obsolete entries duplicate normal entries.

Remove all obsolete entries to fix the jobs.

Change-Id: I7f51922472f12f3a13feb71a6fb344076781d7e9
Closes-Bug: #1299349
Require admin context for interfaces on ext network

Currently any user can attach an interface to a neutron
external network, if the neutron plugin supports the port
binding extension.
In this case, nova will create neutron ports using the admin
client, thus bypassing neutron authZ checks for creating ports
on external networks.

This patch adds a check in nova to verify the API request has an
admin context when a request for an interface is made on a
neutron external network.

Change-Id: I5fb0bdcbf19eb82746ea3b192c1f65899bfb3c0b
Closes-Bug: 1284718
Merge "Require admin context for interfaces on ext network"
Merge "Fix Jenkins translation jobs"