Fix inclusion of tests in manifest.in (#3552)

Jon Wayne Parrott · web-flow · commit 9c1840c2f11c · 2017-06-27T10:32:30.000-07:00
diff --git a/packages/google-cloud-datastore/MANIFEST.in b/packages/google-cloud-datastore/MANIFEST.in
@@ -1,4 +1,4 @@
 include README.rst LICENSE
 recursive-include google *.json *.proto
-recursive-include unit_tests *
+recursive-include tests *
 global-exclude *.pyc __pycache__
