Upgrade to systemd-stable v208

Additional changes in ptest code since now
we have directories and not only bunch of files
under test/ dir so a simple install does not
work anymore we have to cp the files

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>

Conflicts:
	meta/recipes-core/systemd/systemd/systemd-pam-fix-fallocate.patch
	meta/recipes-core/systemd/systemd_208.bb
kmod: Update to Rev 15 via git

Also nail down a previously floating dependancy on zlib, which is required for ptest

Signed-off-by: Saul Wold <sgw@linux.intel.com>