[autotest] Make all dynamic_suite status recording use Status objects

The Suite class uses record_entry() for status, which takes a fully-constructed
status_log_entry.  The Reimager class was using the record() method that takes
some of same parameters used to create a status_log_entry.  Standardize, because
we're going to need the additional flexibility gained by minting our own
status_log_entry objects in some soon-to-land CLs.

BUG=chromium-os:22060
TEST=run_suite; ensure that each host that's reimaged has its own status entry.

Change-Id: Id8352936e464676f948e34e2ddd36e89baad6015
Reviewed-on: https://gerrit.chromium.org/gerrit/26339
Tested-by: Chris Masone <cmasone@chromium.org>
Reviewed-by: Chris Sosa <sosa@chromium.org>
Commit-Ready: Chris Masone <cmasone@chromium.org>
3 files changed