Add option for RIPE-NONAUTH to IIRDB configuration

[elonhub]

With implementation of RIPE NWI-5 for out of region ROUTE(6) objects a new source attribute RIPE-NONAUTH was created. IXP-Manager could allow to generate filters including route(6) objects which have a source of RIPE-NONAUTH. I will provide a simple patch as a startpoint. If there should be more combinations of sources or files touched (see below) i could do that as well.

Found IRRDB stuff at:

• database/seeds/IRRDBs.php
• bin/fixtures.php.dist
• database/vagrant-base.sql
• tools/docker/containers/mysql/docker.sql.dist

[barryo]

Closed by PR #475 from @elonhub