ptest-runner: Upgrade to 2.3

ptest-runner: Upgrade to 2.3

Addes support to report timeout in XML file and duration in
stdout and XML file.

See,

http://git.yoctoproject.org/cgit/cgit.cgi/ptest-runner2/commit/?id=a16f2c137b
http://git.yoctoproject.org/cgit/cgit.cgi/ptest-runner2/commit/?id=8071258373

(From OE-Core rev: c2e069a7f8396d0fe62ad75b76202c29ea84d21c)

Signed-off-by: Aníbal Limón <anibal.limon@linaro.org>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>