Add more py.test config

setup.cfg

@@ -3,6 +3,6 @@ license_file = LICENSE
 
 [tool:pytest]
 testpaths=jupyterlab/tests
-norecursedirs=node_modules
+norecursedirs=node_modules .git _build
 addopts = --pdbcls=IPython.terminal.debugger:Pdb
 ignore=tests