FYI,
I've created a new RTD page for oVirt-system-tests [1] as its an independent project and shouldn't be part of the official Lago documentation, especially not as 1st how-to example.
Please feel free to contribute to it and update it with new info, especially on adding new tests or devel use.
I've also sent a new PR [2] to remove most of the OST and link to the new OST documentation page, and replacing the main example with the Lago jenkins demo.
Going forward, we'll probably create a new lago-examples.git and reference to it for all examples documentation.
You'll also notice I've removed some of the documentation around advanced debugging and explanations on internal Lago structure which shouldn't be on how how to page, but in the Lago Tutorial which is also in progress at [3].
I believe this will help new users get Lago up and running much faster and not handle complex settings like nested virt if they are not interested in installing oVirt at first.