mask out /usr/lib/systemd paths too

We already clear out /lib/systemd, so clear out /usr/lib/systemd too.

BUG=None
TEST=`emerge-x32-generic rsyslogd` no longer installs files in /usr/lib/systemd

Change-Id: Ied62ab13bc2bd5386d3cbb7b511dd29376963cfa
Reviewed-on: https://chromium-review.googlesource.com/203426
Reviewed-by: Gaurav Shah <gauravsh@chromium.org>
Commit-Queue: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
1 file changed