Pass command "config" to dataimport store factory functions

This will be useful in cubicweb-saem_ref to specify parameters for the
metadata generator through an extra command option.

ccplugin.py

@@ -29,17 +29,17 @@ from cubes.skos import rdfio
 from cubes.skos.sobjects import graph_extentities, import_skos_extentities, lcsv_extentities
 
 
-def _massive_store_factory(cnx, **kwargs):
+def _massive_store_factory(cnx, config, **kwargs):
     from cubicweb.dataimport.massive_store import MassiveObjectStore
     return MassiveObjectStore(cnx, **kwargs)
 
 
-def _nohook_store_factory(cnx, **kwargs):
+def _nohook_store_factory(cnx, config, **kwargs):
     from cubicweb.dataimport.stores import NoHookRQLObjectStore
     return NoHookRQLObjectStore(cnx, **kwargs)
 
 
-def _rql_store_factory(cnx, **kwargs):
+def _rql_store_factory(cnx, config, **kwargs):
     from cubicweb.dataimport.stores import RQLObjectStore
     return RQLObjectStore(cnx, **kwargs)
 
@@ -136,7 +136,7 @@ class ImportSkosData(Command):
         import_log = LoggingImportLog()
         print(u'\n%s' % underline_title('Importing Skos dataset'))
         with connection as cnx:
-            store = self.cw_store_factories[self.get('cw-store')](cnx)
+            store = self.cw_store_factories[self.get('cw-store')](cnx, self.config)
             try:
                 (created, updated), conceptschemes = import_skos_extentities(
                     cnx, extentities, import_log, store=store)