monitor: fix pattern of float

@ netdev_add type=tap,id=id1,fds=12:13
  '12:13' would be wrongly matched as a float.

'.' matches an arbitrary char, '\.' matches a dot.

Signed-off-by: Amos Kong <akong@redhat.com>
enable mq feature in qemu cmdline/commands

MQ was disabled in qemu by default, this patch enables it
if user assigns multiple queues, hotplug cases will hotadd
MQ nics.

| commit 32ab06bcf1352848eec42629a85e20efa4e105dc
| Author: Jesse Larrew <jlarrew@linux.vnet.ibm.com>
| Date:   Tue Feb 5 17:47:17 2013 -0600
|
|     hw/virtio-net: disable multiqueue by default
|
|     The new multiqueue feature adds fields to the virtio device config, which
|     breaks Windows guests. Disable the feature by default until the Windows
|     drivers are fixed.

Signed-off-by: Amos Kong <akong@redhat.com>
update config file to assign the queue number

Signed-off-by: Amos Kong <akong@redhat.com>
add testcase to enable MQ feature in guests

Currently MQ feature was disabled by default in guests,
it can be enabled by 'ethtool -L'

This patch added a new testcase to enable all virtio-nic
of all vms, it can be used to enable this feature before
real tests.

Signed-off-by: Amos Kong <akong@redhat.com>