tests: use --insecure instead of web.cacerts=!
--insecure is the proper and documented way to do this. The end result
is the same: dispatch will set web.cacerts to ! when --insecure is
passed.
This patch is necessary to refactor handling of web.cacerts in upcoming
patches.
from __future__ import absolute_import
import pkgutil
__path__ = pkgutil.extend_path(__path__, __name__)