gs: update to 4.19

BUG=None
TEST=`./cbuildbot/run_tests` passes
TEST=`./gs_unittest --network` passes
TEST=`./gslock_unittest --network` passes

Change-Id: I2c81ed927785d28e6b401d823bdf40de857f2a4d
Reviewed-on: https://chromium-review.googlesource.com/345920
Commit-Ready: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Don Garrett <dgarrett@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/chromite/+/2342680
Reviewed-by: Mike Frysinger <vapier@chromium.org>
1 file changed