Add a module to fetch builds from different types of builders.

tools/auto_bisect/run_tests

Index: tools/auto_bisect/run_tests
diff --git a/tools/auto_bisect/run_tests b/tools/auto_bisect/run_tests
index 0ee241e388ac51662f4883b1f2c8ae4c3d996ee3..f078331514295205328558e3db09d8f7de7a8369 100755
--- a/tools/auto_bisect/run_tests
+++ b/tools/auto_bisect/run_tests
@@ -9,12 +9,16 @@ import os
 import sys
 import unittest
 
+SRC = os.path.join(os.path.dirname(__file__), os.path.pardir, os.path.pardir)
+
 
 def main():
+  # Running the tests depends on having the below modules in PYTHONPATH.
+  sys.path.append(os.path.join(SRC, 'tools', 'telemetry'))
+  sys.path.append(os.path.join(SRC, 'third_party', 'pymock'))
+
   suite = unittest.TestSuite()
   loader = unittest.TestLoader()
-
-  # Add all tests in the directory.
   script_dir = os.path.dirname(__file__)
   suite.addTests(loader.discover(start_dir=script_dir, pattern='*_test.py'))