faft: Don't disable sysinfo, as local_dash uses sysinfo to get fw versions

local_dash (generate_test_report) gets fw versions by parsing sysinfo dir.
However, FAFT tests disable sysinfo. local_dash was able to get fw versions
because they also run firmware_FAFTClient with sysinfo enabled.

A recent change makes FAFT tests no longer run firmware_FAFTClient:
    https://gerrit.chromium.org/gerrit/37697

So local_dash failed to generate a correct json file then. This CL is to
enable sysinfo and makes local_dash works again.

BUG=chromium-os:36163
TEST=Run a FAFT test and call local_dash to update the json file.

Change-Id: I72fba6c31443bccd0c9c9eaca5ff017dafb9e68d
Reviewed-on: https://gerrit.chromium.org/gerrit/37881
Reviewed-by: Vic Yang <victoryang@chromium.org>
Commit-Ready: Tom Wai-Hong Tam <waihong@chromium.org>
Tested-by: Tom Wai-Hong Tam <waihong@chromium.org>
76 files changed