Pass --arc_version to cros_set_lsb_release if available

BUG=b:26830205
TEST=./build_image with a board with/without arc_version, check lsb-release
CQ-DEPEND=CL:335894,CL:*252532

Change-Id: I5b2b6227bb97235da6ba3cb7b6c9fa4c9e690c38
Reviewed-on: https://chromium-review.googlesource.com/335648
Commit-Ready: Elijah Taylor <elijahtaylor@chromium.org>
Tested-by: Elijah Taylor <elijahtaylor@chromium.org>
Reviewed-by: Steve Fung <stevefung@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
1 file changed