[test] avoid perf tests to be run on normal tox calls

Currently the perf tests use pytest-twisted plugin, and this has some
implications in the old tests adapted from u1db that now use trial
classes. Because of that, we exclude perf tests from usual tox calls,
but you can still run them by explicitelly calling `tox perf`.

1 files changed, 2 insertions, 0 deletions

diff --git a/testing/tests/pytest.ini b/testing/tests/pytest.ini
new file mode 100644
index 00000000..3d785ca7
--- /dev/null
+++ b/testing/tests/pytest.ini
@@ -0,0 +1,2 @@
+[pytest]
+norecursedirs = perf