Isolate using the -T noaa flag only for part of the resolver test

Isolate using the -T noaa flag only for part of the resolver test

Instead of running the whole resolver/ns4 server with -T noaa flag,
use it only for the part where it is actually needed.  The -T noaa
could interfere with other parts of the test because the answers don't
have the authoritative-answer bit set, and we could have false
positives (or false negatives) in the test because the authoritative
server doesn't follow the DNS protocol for all the tests in the resolver
system test.

(cherry picked from commit e51d4d3b88af00d6667f2055087ebfc47fb3107c)