virt-v2v test cases that cannot be redistributed outside Red Hat.

These test cases are proprietary operating system images, such as
Windows and (ahem!) RHEL.

For documentation, please see the virt-v2v-test-harness(1) manual
page, which is distributed with libguestfs or available online here:
http://libguestfs.org/virt-v2v-test-harness.1.html