cgpt_shell: avoid bash

This script gets run on the target, so we need to avoid bash.

BUG=chromium-os:34715
TEST=build_image works

Change-Id: Ib64036246149b8b98414e4434ed89a3a40c2f693
Reviewed-on: https://gerrit.chromium.org/gerrit/33911
Reviewed-by: Liam McLoughlin <lmcloughlin@chromium.org>
Commit-Ready: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/34023
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Tested-by: Chris Masone <cmasone@chromium.org>
1 file changed