Unbound fails on fresh 11.0_RC6 amd64 install

["erik%eriklabine.com@localhost erik%eriklabine.com@localhost" <erik%eriklabine.com@localhost>]

Hello! This morning, I did a fresh install of 11.0_RC6 amd64 and attempted to add `unbound=YES` to the rc.conf.

It appears there is a bug in the script. It attempts to check the configuration file before it is ever migrated to the /var/chroot/... directory. This results in the script exiting early, before unbound is correctly set up.

I've submitted a patch with bin/60447. I wasn't sure about the severity, but this is technically a blocker for anybody trying to set up a recursive DNS server with the default config. Brook on #NetBSD suggested it might belong at a higher level than "serious" and that I should mention it here for awareness.

Erik