No need to ignore this file

Signed-off-by: Michal Čihař <michal@cihar.com>
Simplify code for attribute based filters

Signed-off-by: Michal Čihař <michal@cihar.com>
Check can not be source and target, just one of those

Signed-off-by: Michal Čihař <michal@cihar.com>