resolver: fix iter_ns_noglue to simulate the right problem
resolver: fix iter_ns_noglue to simulate the right problem

Modifications done with intent to make tests compatible with query name
minimization changed nature of the test. Now the test is simulating the
same problem as before and supports query name minimization at the same
time.

Fixup 2bfa632cca5eb6523f9a7a58c65eca13f2bfcdad.

CZ-NIC/deckard,CZ-NIC/deckard