disable rubocop Style/PredicateName for is_to_s()

Author: jhriggs

lib/puppet/type/mysql_user.rb

@@ -51,9 +51,11 @@ def change_to_s(currentvalue, _newvalue)
       (currentvalue == :absent) ? 'created password' : 'changed password'
     end
 
+    # rubocop:disable Style/PredicateName
     def is_to_s(_currentvalue)
       '[old password hash redacted]'
     end
+    # rubocop:enable Style/PredicateName
 
     def should_to_s(_newvalue)
       '[new password hash redacted]'