chroot_version_hooks.d: Add script to drop chromite .cipd_bin

BUG=b:223433932
TEST=update_chroot

Cq-Depend: chromium:3662300
Change-Id: Iebedb04ea52a461fc1741dcec76eab49b10ae0b2
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosutils/+/3663905
Tested-by: Alex Klein <saklein@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Commit-Queue: Alex Klein <saklein@chromium.org>
1 file changed