Knot-resolver configuration improvement in omnia

My /etc/config/resolver file does not have a include_config line (automatic updated active, system up-to-date). However, /etc/init.d/cresd does have the section on including a custom config file specified in /etc/config/resolver. I am not sure yet about the exact formulation for the forwarding rule in '/etc/kresd/kres.config.local, a few different formulations have been mentioned before here.

I must admit I don’t know much about the UCI stuff, how options get merged from multiple files, etc. Still, if you manage to edit lines that get into kresd configuration, detailed description of the rules are in upstream documentation – please notify me about any unclear parts.