Fix #8654 - OSD.cc: parse LSB data via lsb_release

Use lsb_release tool to be portable since parsing /etc/lsb-release
is not the same between different distributions. The old code failed
e.g. for SUSE products to parse LSB information.

Fixes: #8654

Signed-off-by: Danny Al-Gaaf <danny.al-gaaf@bisect.de>
Okay ... used some of my old code from HAL (http://cgit.freedesktop.org/hal/tree/hald/linux/probing/probe-lsb-release.c) for this problem without checking the code style ... will fix it.