virt: Multi-host migration with network problem on destination side

1) Multi-host migration with network problem on destination side
2) Repair multi-host test starter for renamed kvm tests to qemu tests.

Signed-off-by: Jiří Župka <jzupka@redhat.com>
virt: Repairs Multi-host starter for renamed tests [kvm->qemu].

Signed-off-by: Jiří Župka <jzupka@redhat.com>