build_image: symlink bash if it is installed on stateful-dev

For cros_embeeded, bash is not part of the base image. But emerge
requires that it be present at /bin/bash. Fix this, by creating
a symlink.

BUG=chromium-os:39300
TEST=ls -l /build/daisy-drm/bin/bash

Change-Id: I68fdfb59bb6d916f5790833d45f8d69da208e76a
Reviewed-on: https://gerrit.chromium.org/gerrit/44273
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Commit-Queue: Mandeep Singh Baines <msb@chromium.org>
Tested-by: Mandeep Singh Baines <msb@chromium.org>
1 file changed