Docs should describe how to build OpenStack qcow2 images
Building examples, e.g. acorn provide an acorn ELF binary and an acorn image with DOS/MBR.

Presumably a conversion of the form
qemu-img convert -O qcow2 acorn.img acorn.qcow2
is required

Then upload the image as
openstack image create --container-format bare --disk-format qcow2 --file acorn.qcow2 includeos_acorn

The create a server using something like
openstack server create --nic net-id=mynet --flavor tiny --image includeos_acorn includeos_acorn

But as openstack console log show includeos_acorn shows no text, presumably there are other necessary steps.