add new 'factory_Verify' test which verifies all required tests are finished.

suite_Factory/test_list must also use unique_name to specify
corresponding test targets. That part will be included in another CL:
http://codereview.chromium.org/3180022/show

BUG=chrome-os-partner:827
TEST=manual

Change-Id: Ide28d16dc8b2a8815e4eee7e0dbf920e429a3f6e

Review URL: http://codereview.chromium.org/3116035
2 files changed