[sr-dev] Cleanup by server id

Hello All, I would like to propose improvement for feature "server_id filter" to make possible cleaning location table records by server_id too. That could be usefull when several kamailio instances are used with the same location table and in db mode 1 or 2 (cache). Currently in such configuration there is an issue - one proxy cleans records which are created and stored in the cache by another proxy. That breaks cache of another proxy. I made a fix and would like to open pull request but I don't have permissions to push my branch with changes into the kamailio repository. Could some grant me such permissions? Thank you. Best regards Konstantin