Replace recipes_test.py with a new parallel expectation-based test runner.

scripts/slave/unittests/expect_tests/__init__.py

Index: scripts/slave/unittests/expect_tests/__init__.py
diff --git a/scripts/slave/recipe_modules/zip/__init__.py b/scripts/slave/unittests/expect_tests/__init__.py
similarity index 74%
copy from scripts/slave/recipe_modules/zip/__init__.py
copy to scripts/slave/unittests/expect_tests/__init__.py
index 7701abc0d66c834241ed3ed14b6f5a1b4d6d179d..51baa54a874000dc0a98b50e0957d93df6b3d58d 100644
--- a/scripts/slave/recipe_modules/zip/__init__.py
+++ b/scripts/slave/unittests/expect_tests/__init__.py
@@ -2,9 +2,5 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-DEPS = [
-  'python',
-  'path',
-  'platform',
-  'json',
-]
+from .main import main
+from .types import Test, Result