This new VM image brings in two important updates to multi-arch
image build operations:
1. Future operational changes will no-longer require also updating VM
images. Updates to build-push made in `containers/automation_images`
will automatically be picked up at runtime.
ref: https://github.com/containers/automation_images/pull/123
2. On the next run, both `vX` and `vX.Y` tagged manifest-lists will be
pushed. This is now also reflected in the README.
ref: https://github.com/containers/automation_images/pull/125
Signed-off-by: Chris Evich <cevich@redhat.com>