twisted: upgraded package to upstream

Upgraded dev-python/twisted to version 16.6.0-r3 on amd64, arm

It's needed by factory unittest.

BUG=chromium:999876
TEST=update_chroot

Change-Id: I3a21fd3604e84a078103b866fc118706d889e96e
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/portage-stable/+/2212084
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Tested-by: Yilin Yang (kerker) <kerker@chromium.org>
Commit-Queue: Yilin Yang (kerker) <kerker@chromium.org>
11 files changed