cgroup: Update XML Schema for new entries.
cgroup: Update XML Schema for new entries.

Update XML Schema for new entries.

Signed-off-by: Gui Jianfeng <guijianfeng@cn.fujitsu.com>
(cherry picked from commit 7c8c183e247ba1b917e66293a199be2b3c6cdf88)

Signed-off-by: Steve Hodgson <eb20a6615749cf04ff61aa37e18f749ed6d01446@solarflare.com>

sshah-solarflare/Libvirt-PCI-passthrough-,sshah-solarflare/Libvirt-PCI-passthrough-,sshah-solarflare/Libvirt-PCI-passthrough-,sshah-solarflare/Libvirt-PCI-passthrough-,sshah-solarflare/Libvirt-PCI-passthrough-