coveralls: Don't shadow 'grpc' via '_testing' stubs.

tseaver · tseaver · commit 46720fa66c2b · 2016-05-12T22:16:37.000-04:00
diff --git a/tox.ini b/tox.ini
@@ -62,6 +62,8 @@ commands =
 deps =
     {[testenv:cover]deps}
     coveralls
+setenv =
+    PYTHONPATH =
 passenv = {[testenv:system-tests]passenv}
 
 [testenv:docs]
