[autotest] Add a build sanity check suite

This is part of the work needed by running cq, canary, pfq, release
in a single pool:critical.

We need to ensure that a build won't break a dut.
This cl add a new suite that contains only one dummy_Pass test.

The suite should trigger a provision and then run the test.
Note if the dut has already been provisioned by the build, it
won't be provisioned again. But the fact that the client test
succeeded should provide enough confidence.

TEST=Build a trybot build. Run the suite.

Change-Id: I06cdb136a8fde4475ae61ca290a23f7700f74489
Previous-Reviewed-on: https://chromium-review.googlesource.com/233046
Trybot-Ready: Fang Deng <fdeng@chromium.org>
(cherry picked from commit 896cea979c311b37d9f56cef34182acb02cd999c)
Reviewed-on: https://chromium-review.googlesource.com/236881
Reviewed-by: Dan Shi <dshi@chromium.org>
Commit-Queue: Fang Deng <fdeng@chromium.org>
Tested-by: Fang Deng <fdeng@chromium.org>
2 files changed