virt-libvirt: modify libvirt_vm where use virsh.domid

Signed-off-by: Li Yang <liyang.fnst@cn.fujitsu.com>
virt-libvirt: modify virsh function for virsh domid

Signed-off-by: Li Yang <liyang.fnst@cn.fujitsu.com>
virt-libvirt: add test module for virsh domid

Signed-off-by: Li Yang <liyang.fnst@cn.fujitsu.com>
virt-libvirt: add configuration for virsh domid

Signed-off-by: Li Yang <liyang.fnst@cn.fujitsu.com>