build_image: switch from pbzip2 to lbzip2

Since lbzip2 is faster than pbzip2, switch to it.

BUG=b:187789829
TEST=CQ passes

Change-Id: Ib7d6d72bf9ea19d658a1284d27d9c9f2f3243437
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosutils/+/3573588
Commit-Queue: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Auto-Submit: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Lizzy Presland <zland@google.com>
Commit-Queue: Lizzy Presland <zland@google.com>
2 files changed