new distributors and blocklist param in the assignmets file

After the deployment of the new version of BridgeDB and rdsys the assignments file is now generated by rdsys (instead of bridgedb) and has few new things.

Now there are three more distribuion mechanisms: settings, telegram and reserved.

There is a new param on some of the lines blocklist=de,mx with a list of countries where we don't distribute this bridge because we believe is blocked there.