[dts] [PATCH V1]framework/qemu_libvirt: add new features

[yufengmx <yufengx.mo@intel.com>]

 These new features demand come from Intel BKC team and wang,yinan. 
*. support bridge setting in xml. 
*. support vhost-user setting in xml. support to add driver attribute by set option opt_queue and opt_setting. 
*. add __add_vm_net_tap method to add tap&bridge net device. 
*. add __generate_net_config_script method to set default br0 using script. 
*. add __write_config method to make recursion write config in xml config file. 
*. use dut logger to take the place of print. 
*. remove graphics vnc config in set_vm_default method, add add_vm_vnc method to do graphics vnc setting. This is aimed to keep the same as qemu_kvm method. 
*. add add_vm_daemon method to keep the same as qemu_kvm method. libvirt run virtual machine with daemon status by default. 

yufengmx (1):
  framework/qemu_libvirt: add new features

 framework/qemu_libvirt.py | 327 ++++++++++++++++++++++++++++++++++++++--------
 1 file changed, 273 insertions(+), 54 deletions(-)

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1.9.3