Make the Q dnsresolver tests pass on 2020-01 or later modules.

These tests do not pass because the module removed support for
TLS fingerprints, instead using its own CA cert. The fingerprints
were only ever used for testing, so removing the functionality
doesn't cause problems at runtime, but it does does break the
tests in qt-dev.

It is not practical to backport to qt-dev the change that removes
support for fingerprints. So just skip the tests on qt-dev for
now.

Bug: 144850003
Test: cd system/netd/resolv; atest
Change-Id: Ic3decb762d7beb4860dd0634da2309430dd150cd
Merged-In: Id0584aea3a3472ef1008cc6ae3acb1fbce7d5ca3
Merged-In: Ic4af1258b6c6072cdbd00d3ea2ce71bdca27861a