utils_test.libvirt: Add function to create xml for hostdev device.

Signed-off-by: Yu Mingfei <yumingfei@cn.fujitsu.com>
utils_misc: Add VFIO relative functions.

Signed-off-by: Yu Mingfei <yumingfei@cn.fujitsu.com>
virttest.libvirt_vm: Add functions to get vm pci devices.

Signed-off-by: Yu Mingfei <yumingfei@cn.fujitsu.com>
utils_misc.VFIO: Fix bugs for class and functions.

Signed-off-by: Yu Mingfei <yumingfei@cn.fujitsu.com>
virttest.libvirt_xml: Support to set boot order for hostdev.

Signed-off-by: Yu Mingfei <yumingfei@cn.fujitsu.com>
Add libvirt-guests configuration file.
virsh: command timeout support

Signed-off-by: Yanbing Du <ydu@redhat.com>
utils_net: Add new function to the class Bridge() for STP status

1) improve the return of function Bridge().get_structure()
2) add function to get the status of STP for specified bridge
3) make corresponding modification for list_br() and list_iface()
test_getstructure: check Bridge.get_structure()'s return as new format
Merge pull request #1854 from will-Do/virsh_timeout

virsh: command timeout support
Merge pull request #1839 from yumingfei/vfio

VFIO: Add class and functions to operate vfio.
Merge pull request #1860 from rbian/libvirt_guests

Add libvirt-guests configuration file.
Merge pull request #1865 from PandaWei/develop

utils_net: add function to get the status of STP for specified bridge
virttest.nfs: support NFS client setup

Signed-off-by: Alex Jia <ajia@redhat.com>