This bug was fixed in the package software-properties - 0.96.20.1
--------------- software-properties (0.96.20.1) xenial; urgency=medium
* cloudarchive: Enable support for the Newton Ubuntu Cloud Archive on 16.04 (LP: #1591382).
-- Corey Bryant <email address hidden> Fri, 10 Jun 2016 17:32:35 -0400
This bug was fixed in the package software-properties - 0.96.20.1
---------------
software-properties (0.96.20.1) xenial; urgency=medium
* cloudarchive: Enable support for the Newton Ubuntu Cloud Archive on
16.04 (LP: #1591382).
-- Corey Bryant <email address hidden> Fri, 10 Jun 2016 17:32:35 -0400