autotest/virt-test — pull request #763 by humanux (2013-08-22 07:00:12+00:00)
Title:  virt.test.vlan : make the script support add/remove vlan by ip link

Now in some os only support add/remove vlan by 'ip link',
this patch make the script support them.

Signed-off-by: Yunping Zheng