Merge "Fix cover target"

tox.ini

@@ -59,13 +59,15 @@ commands =
   sphinx-build -a -E -W --keep-going -b html releasenotes/source releasenotes/build/html
 
 [testenv:cover]
+setenv =
+  PYTHON=coverage run --source oslo_log --parallel-mode
 commands =
   coverage erase
   {[testenv]commands}
   coverage combine
   coverage html -d cover
   coverage xml -o cover/coverage.xml
-  coverage report --show-missing
+  coverage report
 
 [flake8]
 show-source = True