update hooks: rebuild packages that use python in their build system

Some packages have to set the active python interp to version 2 so that
they can build.  They don't actually link or install python files.

Unfortunately, the current eclass code ends up storing the current ver
of python in the env and then tries to use that when installed as binpkgs
(even though no src_* steps get run).  This fails when that version of
python is no longer installed.

Locate & rebuild those few packages.

BUG=chromium:206038
TEST=`./run_chroot_version_hooks` processed the few remaining binpkgs

Change-Id: I513694ecc2479aa65d346384e421ed68d65cffa6
Reviewed-on: https://gerrit.chromium.org/gerrit/47524
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Commit-Queue: David James <davidjames@chromium.org>
1 file changed