GitLab

Fuchsia integration tests have been flaking on the waterfall. Disable
them until the underlying issue is fixed.
This also separates castrunner unit tests and integration tests in two
different test suites.

Bug: 917192, 918586
Change-Id: Idd3ad424559b7d68679d16d6a2e56929c33e029a
Reviewed-on: https://chromium-review.googlesource.com/c/1393887Reviewed-by: Dirk Pranke <dpranke@chromium.org>
Reviewed-by: Wez <wez@chromium.org>
Commit-Queue: Fabrice de Gans-Riberi <fdegans@chromium.org>
Cr-Commit-Position: refs/heads/master@{#619694}