[autotest] blacklist 2 files from unittest_suite.py

CL adds 2 tests to utils/unittest_suite.py blacklist so that they are no
longer run as unit tests.

BUG=chromium:239255
TEST=Run utils/unittest_suite.py. chaos_base_test and chaos_interop_test
no longer show up as failing.

Change-Id: Ifef1b460dc48b6fb0094a37a4afb34a68619eeb6
Reviewed-on: https://gerrit.chromium.org/gerrit/50874
Commit-Queue: Aviv Keshet <akeshet@chromium.org>
Tested-by: Aviv Keshet <akeshet@chromium.org>
Reviewed-by: Tan Gao <tgao@chromium.org>
1 file changed