seccomp: adding new syscalls (bugzilla 855162)

According to the bug 855162[0] - there's the need of adding new syscalls
to the whitelist when using Qemu with Libvirt.

[0] - https://bugzilla.redhat.com/show_bug.cgi?id=855162

Reported-by: Paul Moore <pmoore@redhat.com>
Tested-by: Paul Moore <pmoore@redhat.com>
Signed-off-by: Eduardo Otubo <otubo@linux.vnet.ibm.com>
Signed-off-by: Corey Bryant <coreyb@linux.vnet.ibm.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
