Code review comment for ~raharper/curtin:vmtest/enable-h-series

After sorting sync-images issues, local run of:

./tools/jenkins-runner -p 12 --filter=target_release=hirsute

----------------------------------------------------------------------
Ran 923 tests in 1957.220s

OK (SKIP=139)
Thu, 14 Jan 2021 14:42:59 -0600: vmtest end [0] in 1959s