[cwctl] on upgrade, clear instance_md5_version cache
The generate-static-datadir depends on a correct
config.instance_md5_version(), and we just invalidated it by
upgrading the instance.
.. _authplugin_module:
:mod:`cubicweb.pyramid.authplugin`
----------------------------------
.. automodule:: cubicweb.pyramid.authplugin
.. autoclass:: DirectAuthentifier
:show-inheritance:
:members: