[crosperf] Add phony image testing, for easier package development.

Using a 'real' bad image for bisecting tool development makes it
very slow because it often requires manual intervention to push
images onto device and to verify if image is good or bad.

This CL creates a phony good/bad test that just looks at the md5 hash
value of Chrome package, allowing testing to be done with two good images,
which greatly simplifies bisecting tool development.

BUG=None
TEST=Tested these scripts individually in my chroot.

Change-Id: I4342f8f152162e12f49b916f5977776aa79e1b03
Reviewed-on: https://chrome-internal-review.googlesource.com/264605
Commit-Ready: Cassidy Burden <cburden@google.com>
Tested-by: Cassidy Burden <cburden@google.com>
Reviewed-by: Caroline Tice <cmtice@google.com>
1 file changed