[autotest] run_suite.py should use autotest logging format

This includes timestamps in all log statements, as well as info about warning level.
We log to the console, only.

BUG=chromium-os:27873
TEST=Use run_suite.py to schedule a suite.  While it's running, stop the autotest front end.  See that the log messages about failing RPCs have timestamps in them.
STATUS=Fixed

Change-Id: I566a4ac3dbc0fdbc55908fda209aed0853b31401
Reviewed-on: https://gerrit.chromium.org/gerrit/18472
Tested-by: Chris Masone <cmasone@chromium.org>
Reviewed-by: Scott Zawalski <scottz@chromium.org>
Commit-Ready: Chris Masone <cmasone@chromium.org>
1 file changed