cbuildbot: use --force-sync with repo sync
Newer versions of repo have changed the internal layout of its git
storage. When it detects older versions are in use, it aborts the
sync process forcing manual intervention. Pass down --force-sync
so repo will cleanup & resync things manually.
BUG=chromium:650719
TEST=precq still syncs, and does so with the new flag
(cherry picked from commit e8b9df037f41ce67c9e89485b3b403b6a691c2cd)
Change-Id: I12bee0d4af0d156d71ab47bbe20ac764061b3202
Reviewed-on: https://chromium-review.googlesource.com/395907
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
2 files changed
