keyutils: upgraded package to upstream

Upgraded sys-apps/keyutils to version 1.6.3 for newer EAPI.

BUG=b:187789240
TEST=CQ passes

Change-Id: I744a2d2dae7b26eccbbb138a6e7ce8348edd2320
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/portage-stable/+/3206434
Reviewed-by: Ryo Hashimoto <hashimoto@chromium.org>
Commit-Queue: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
6 files changed