Ignore from isort the tests from the root

.isort.cfg

@@ -3,5 +3,5 @@ multi_line_output=3
 line_length=88
 known_third_party=astroid, sphinx, isort, pytest, mccabe, six,
 include_trailing_comma=True
-skip_glob=*/functional/**,*/input/**,*/test/extension/**,*/test/regrtest_data/**,*/test/data/**
+skip_glob=tests/functional/**,tests/input/**,*/test/extension/**,tests/regrtest_data/**,*tests/data/**
 project=pylint