tests: use `hg unbundle` in test-setdiscovery.t
This is testing how discovery between 2 well-defined repos works,
not that `hg pull` works with bundles. Switch to `hg unbundle` so it
works in environments where bundlerepos aren't supported.
Differential Revision: https://phab.mercurial-scm.org/D3109
from __future__ import absolute_import
import pkgutil
__path__ = pkgutil.extend_path(__path__, __name__)