This change includes relevant toolchain versions and some echos
announcing the stages of testing. This should make kokoro's logs a bit
easier to diagnose.
TEST=kokoro_simulator.sh
BUG=None
Change-Id: I6d51d8ae6618a244338605d61882eeedcb1f5b79
Reviewed-on: https://chromium-review.googlesource.com/1324689
Commit-Ready: Zach Reizner <zachr@chromium.org>
Tested-by: Zach Reizner <zachr@chromium.org>
Reviewed-by: Stephen Barber <smbarber@chromium.org>