The python-io package includes ssl.py module which imports the
contextlib library.
This applied to Python 2.7.9 but not 3.3.
(From OE-Core rev: b6b9df15a630605619bff060d5073272685058d6)
Signed-off-by: Ash Charles <ashcharles@gmail.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>