Add global per-test timeout to Python test harness
diff --git a/src/python/grpcio_test/setup.py b/src/python/grpcio_test/setup.py
index a6203ca..898ea20 100644
--- a/src/python/grpcio_test/setup.py
+++ b/src/python/grpcio_test/setup.py
@@ -61,6 +61,7 @@
     'pytest>=2.6',
     'pytest-cov>=2.0',
     'pytest-xdist>=1.11',
+    'pytest-timeout>=0.5',
 )
 
 _INSTALL_REQUIRES = (