update virt_plus suite setup to remove useless vlan creation
update virt_plus suite setup to remove useless vlan creation

zstackio/zstack-woodpecker,quarkonics/zstack-woodpecker,zstackio/zstack-woodpecker,zstackorg/zstack-woodpecker,quarkonics/zstack-woodpecker,zstackorg/zstack-woodpecker,zstackorg/zstack-woodpecker,zstackio/zstack-woodpecker