autotest/virt-test — pull request #840 by yumingfei (2013-09-11 09:33:33+00:00)
Title: libvirt.tests: Add cross migration test for virsh_migrate_stress.

Cross migration:
```
local ===== remote
1st time:
vm1 ->
2nd time:
<- vm1
vm2 ->
3rd time:
<- vm2
vm3 ->
```