virt-libvirt: add configuration for virsh dommemstat

Signed-off-by: Li Yang <liyang.fnst@cn.fujitsu.com>
virt-libvirt: add virsh function for virsh dommemstat

Signed-off-by: Li Yang <liyang.fnst@cn.fujitsu.com>
virt-libvirt: add test for virsh dommemstat

Signed-off-by: Li Yang <liyang.fnst@cn.fujitsu.com>
virt: add Multi-host migration test for check time drift.

1) Syncs hosts time via timesync command.
2) After first boot of vms test check time on vms
   if time difference from host is greater than
   time_diff_limit it writes warning to log.
3) Migrates machine between hosts and compares
   time differences on hosts and guests after migration.
  - If difference is greater than time_diff_limit raise error.

Signed-off-by: Jiří Župka <jzupka@redhat.com>
shared: Add new guest os Fedora 18

Signed-off-by: Qingtang Zhou <qzhou@redhat.com>
nic_hotplug: Removing move of the hotplug rules

It was pointed out that this prevents the devices from
coming up and NetworkManager can't assign addresses.

CC: Cleber Rosa <cleber@redhat.com>
CC: Feng Yang <fyang@redhat.com>
Signed-off-by: Lucas Meneghel Rodrigues <lmr@redhat.com>
run_pylint.py : Fix with autotest improvements

Disable user's pylint configuration.

Signed-off-by: Lucas Meneghel Rodrigues <lmr@redhat.com>