Draft: cache: turn off QNAME minimization in deeper zones
This matches behavior of kresd <= 1.5.3 - check_empty_nonterms(...) Currently the iterator is unable to do QNAME minimization in deeper zones, so switching it off is the only thing to do for now :-/
Fixes https://gitlab.labs.nic.cz/knot/knot-resolver/issues/316
Edited by Vladimír Čunát