[autotest] Introduce a suite for dangerous tests, and add tests to it.

This list was formed by walking through a week's of machine killers, and
grabbing all the obvious repeat offenders from the list.  I expect more
will be added over time, but this is a good initial start.

TEST=None
BUG=chromium:314769

Change-Id: I1f3ad1c0fca405548548f0114dd67a1b0b670d04
Reviewed-on: https://chromium-review.googlesource.com/178126
Commit-Queue: Alex Miller <milleral@chromium.org>
Tested-by: Alex Miller <milleral@chromium.org>
Reviewed-by: Dan Shi <dshi@chromium.org>
16 files changed