[MIR] checkbox-support

Following https://wiki.ubuntu.com/MainInclusionProcess and
https://wiki.ubuntu.com/UbuntuMainInclusionRequirements

I have checked the following requirements:

Availability: the package is available in Debian and Ubuntu 14.04 and builds
for every architecture

Rationale: The package is a new (upcoming) dependency for a package already
in main, checkbox. Since the checkbox python libraries will be replaced by
plainbox for 14.04, some test scripts importing packages from the (old)
checkbox namespace have now to import the same modules but this time from
checkbox_support. This package provides such python modules.

Security: this is not an enterely new package because it provides the same
python modules and tests that checkbox provided, with no known security
issues. The package has extensive test suite, especially focusing on
security sensitive components. A team of people supports the package so any
discovered issues can be addressed quickly.

Quality assurance: the package is a dependency for checkbox so it's not
aimed at end users directly. The package is maintained in Debian and Ubuntu
and has no outstanding bugs reported there. There are many bugs reported on
the upstream project itself but those are used for tracking development
internally by the team. The package is used daily without major issues (from
a development PPA). The package does not have any hardware dependent code.
The package ships with a build-time test suite to ensure stability for
downstream users. The package uses debian/watch file to track new releases.

UI standards: NA

Dependencies: All in main.

Standards compliance: The package is standards compliant.

Maintenance: The package is maintained by the hardware certification team
inside Canonical. It is a relatively simple set of python modules so that
should be more than sufficient. There is no Ubuntu/Debian delta now nor can
the reporter imagine a reason why that should ever change.

Background information: the package description contains extensive
description of the purpose and scope of the package. This package was not
renamed recently, or at all.