handle new CV run ended message
handle new CV run ended message

As announced in http://g/luci-announce/d5-USDV4YXQ, the run pass
and failure message will be changed as part of CQ -> CV migration.
This CL allows the tool to handle both old style and new style
messages.

Change-Id: Ia06c05eeff321b26af92dc67bd41747e60d9b071
Reviewed-on: https://chromium-review.googlesource.com/c/crosvm/crosvm/+/3914865
Reviewed-by: Dennis Kempin <cd09796fb571bec2782819dbfd33307f65b1c778@google.com>
Commit-Queue: Yiwei Zhang <50b2a565e2e78c292794832469a30ce5abc9959c@google.com>

google/crosvm,google/crosvm,google/crosvm,google/crosvm