Re-land "[crostestutils] Pipe verbose flag up to cros_run_{parallel_}vm_test{s}"

This reverts commit abe75065b9d1a88989b314c3c29057b46167a6f6


BUG=chromium-os:20426
TEST=cros_run_vm_test --board ${BOARD} --use_emerged -v 0 LoginSuccess

Change-Id: I17912b8e6135e8052ace2339aed416e58f77ae14
Reviewed-on: https://gerrit.chromium.org/gerrit/10739
Commit-Ready: Chris Masone <cmasone@chromium.org>
Tested-by: Chris Masone <cmasone@chromium.org>
Reviewed-by: Chris Masone <cmasone@chromium.org>
2 files changed