[autotest] Fix unittest -- autotest_unittest.py

Fix mock object expected calls so that unit test passes.

BUG=chromium-os:37989
TEST=Unit tests for this module now pass

Change-Id: Ia3674e639f1595abe8d7c5a5808ce5c5970756e5
Reviewed-on: https://gerrit.chromium.org/gerrit/43217
Commit-Queue: Aviv Keshet <akeshet@chromium.org>
Reviewed-by: Aviv Keshet <akeshet@chromium.org>
Tested-by: Aviv Keshet <akeshet@chromium.org>
1 file changed