os-release: fix to install in the expected location

os-release: fix to install in the expected location

os-release (5) recommends that the os-release file be installed in
/usr/lib/os-release and that /etc/os-release be a relative symlink to it.

(From OE-Core rev: 4feb8614ee25a3d3ceb7f5187120a1256a993155)

(From OE-Core rev: 4e67fa950cd3ca6e44d7f46743904d23a756e498)

Signed-off-by: Joshua Lock <joshua.g.lock@intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Armin Kuster <akuster808@gmail.com>