autotest/autotest — pull request #41 by zhouqt (2011-10-19 08:56:28+00:00)
Title: client: Add a new script for creating tap device

Autotest uses tapfd for netdev by default, this kind of qemu command line
can't be executed manually.

This patch will add a new script to run this kind of qemu command line,
it may help debuging qemu problem by hand.

The usage of this script:

# tapfd_helper

- 'bridge_name' is the bridge name which tap devices will bridge to.
- 'qemu_command_line' is the command which is generated by autotest.

Signed-off-by: Qingtang Zhou