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/certdb.py

@@ -30,6 +30,8 @@ from ipapython.ipa_log_manager import root_logger
 from ipapython import ipautil
 from ipalib import x509
 
+# pylint: disable=unused-variable
+
 CA_NICKNAME_FMT = "%s IPA CA"