[config] Ignore cubicweb-pyramid in available_cubes()
So that, in particular, its ccplugin.py does not get loaded (which would hide
the "pyramid" command in cubicweb).
Related to #14023058.
.. _authplugin_module:
:mod:`cubicweb.pyramid.authplugin`
----------------------------------
.. automodule:: cubicweb.pyramid.authplugin
.. autoclass:: DirectAuthentifier
:show-inheritance:
:members: