The requirement comes from build appliance. Build appliance will run HOB to build images, and hope HOB to deploy the image to USB key or launch QEMU. Build appliance will provide a script for deployment and HOB needs to integrate it.
QA will test the deployment feature in HOB after it's finished.
The feature is tested against mastet branch with commit a439d32dd8... It could work without issue now.
Done
Verified in master:a02280f99f05b1c21de2a78de9222a2f62a0dabc.