Now that we can override the format to avoid the time spent compressing
pkgbase packages we can test `make packages` with only 5 minutes or so
added to the CI cycle time.
A future change should switch the CI smoke test to using these packages.
Sponsored by: The FreeBSD Foundation
In review D19876 ian@ has some proposed improvements to the
tools/boot/ci-qemu-test.sh script. Start specifying the location of
OVMF.fd fetched by the Cirrus-CI build in advance of those changes.
