[hg] Add generated slapd.conf to hgignore

Fix flake8 errors in unittest_cwctl

[cwctl] Drop 'cubicweb_' prefix when displaying cubes with 'cubicweb-ctl list' consistently with newcube / create commands. This is an alternate implementation to backed out changeset fe995d56c949. Closes #17054738

Fix flake8 errors in unittest_cwconfig

[config] Test loading of ccplugin modules to ensure ccplugin modules of cube as package aren't loaded twice, once as `cubicweb_<cube>.ccplugin`, once as `cubes.<cube>.ccplugin`. This test used to fail until fe995d56c949 has been backout. It requires calling `cleanup_sys_module` in `CubicWebConfigurationTC.tearDown` to remove any cube's submodule loaded during tests, so content of `sys.modules` may be tested.

[test] Extract out method-which-is-not-a-method mocking iter_entry_points to ease reuse and improve readability.

[cwconfig] Add a docstring on available_cubes method a renaming could be better at some point, but that's a start.

Backed out changeset fe995d56c949 available_cubes should not strip cubicweb_prefix but return actual package name for cube as package, since its output is also used to e.g. get ccplugin or site_cubicweb module name. Original aim of this set was to fix output of the "cubicweb-ctl list" command. This will be done by an alternate implementation in a later cset.

[hooks] Drop "logstats" hook It is now useless as its looping task would not run on a web instance because respective repository has no scheduler.

[hooks] Do not register "logstats" if repository has no scheduler