Fixes: turris/turris-os-packages#384

The same patch was applied by someone else in upstream

Even OpenWrt 18.06 should be feature frozen and receive just security updates together with bug fixes, but there was added rpcbind.

Upstream disabled requirement for libbsd so we can drop this patch.

This makes old version to be same as our up to now but it should not
break anything and I epxect that our build bumper is going to bump it
because ABI will be different.

Upstream might have fixed this in:
d02a17b35bb8105a208422797c99242520650f12

Bump to latest python 3.6 version and squah one patch in to it.

I forgot to bump it so it won't update and invalid configuration is in
use instead.