Rework the generation script. am: 34ee9eeac3 am: 270d9b9708

Original change: https://android-review.googlesource.com/c/device/google/cuttlefish_vmm/+/2810814

Change-Id: I91ee4250d0ddff55f66fdead339576cddd7e38ad
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>