Pylint: enable check for unused-variables

Unused variables may:
* make code less readable
* create dead code
* potentialy hide issues/errors

Enabled check should prevent to leave unused variable in code

Check is locally disabled for modules that fix is not clear or easy or have too many occurences of
unused variables

Reviewed-By: Florence Blanc-Renaud <frenaud@redhat.com>
Reviewed-By: Stanislav Laznicka <slaznick@redhat.com>

ipapython/ipautil.py

@@ -54,6 +54,8 @@ from ipapython import config
 from ipaplatform.paths import paths
 from ipapython.dn import DN
 
+# pylint: disable=unused-variable
+
 SHARE_DIR = paths.USR_SHARE_IPA_DIR
 PLUGINS_SHARE_DIR = paths.IPA_PLUGINS