tests: exclude bundled pywatchman from check-code test
pywatchman is imported from upstream and therefore fails to pass
linting. We have added 'no-check-code' manually to every file in the
past. This is cumbersome and modifies upstream sources.
# name space package to host third party extensions
from __future__ import absolute_import
import pkgutil
__path__ = pkgutil.extend_path(__path__, __name__)