update_kernel_afdo: use gsutil.py instead of gsutil

This changes update_kernel_afdo to call gsutil.py instead of
gsutil (without the ".py"). Reason: the non-.py does not exist
everywhere, whereas gsutil.py is part of depot_tools.

BUG=None
TEST=./afdo_tools/update_kernel_afdo

Change-Id: I7c2192f5d4ef85852a4c5023edb29e9a092bbb8d
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/toolchain-utils/+/2490652
Tested-by: Bob Haarman <inglorion@chromium.org>
Reviewed-by: George Burgess <gbiv@chromium.org>
Reviewed-by: Manoj Gupta <manojgupta@chromium.org>
1 file changed