.coveragerc: only include src

Author: blueyed

.coveragerc

@@ -4,8 +4,11 @@ parallel = 1
 branch = 1
 
 [report]
+include = src/*
 skip_covered = 1
 
 [paths]
 source = src/_pytest/
   .tox/*/lib/python*/site-packages/_pytest/
+pytestpy = src/pytest.py
+  .tox/*/lib/python*/site-packages/pytest.py