reverse the direction of the monitor configuration flag

This makes ply image not configure the monitors by default, and
requires an explicit flag (--set-monitors) to enable it.

BUG=chrome-os-partner:26957
TEST=builds
CQ-DEPEND=CL:192411

Change-Id: Idc98ad4f9b13d21cbd98805d868333f860207a21
Reviewed-on: https://chromium-review.googlesource.com/192392
Reviewed-by: Stéphane Marchesin <marcheu@chromium.org>
Commit-Queue: Stéphane Marchesin <marcheu@chromium.org>
Tested-by: Stéphane Marchesin <marcheu@chromium.org>
2 files changed