Make root hints consistent with authoritative data

Resolvers in the "filter-aaaa" system test are configured with a single
root hint: "ns.rootservers.net", pointing to 10.53.0.1.  However,
querying ns1 for "ns.rootservers.net" results in NXDOMAIN answers.
Since the TTL for the root hint is set to 0, it may happen that a
resolver's ADB will be asked to return any known addresses for
"ns.rootservers.net", but it will only have access to a cached NXDOMAIN
answer for that name and an expired root hint, which will result in a
resolution failure, triggering a false positive for the "filter-aaaa"
system test.  Prevent this from happening by making all the root hints
consistent with authoritative data served by ns1.

(cherry picked from commit c19ebde1)
43 jobs for !2205 with michal/filter-aaaa-system-test-make-root-hints-consistent-with-authoritative-data-v9_14 in 18 minutes and 35 seconds (queued for 3 seconds)
detached
Status Job ID Name Coverage
  Precheck
passed 🐞:sid:amd64 #288774
amd64 linux

00:00:42

passed misc:sid:amd64 #288773
amd64 linux

00:00:20

 
  Build
passed asan:sid:amd64 #288786
amd64 linux

00:02:11

passed clang:stretch:amd64 #288787
amd64 linux

00:02:03

passed clang:stretch:i386 #288788
i386 linux

00:02:18

passed docs:sid:amd64 #288775
amd64 linux

00:01:02

passed gcc:bionic:amd64 #288785
amd64 linux

00:02:54

passed gcc:buster:amd64 #288780
i386 linux

00:03:17

passed gcc:centos6:amd64 #288776
amd64 linux

00:02:37

passed gcc:centos7:amd64 #288777
amd64 linux

00:02:50

passed gcc:fedora29:amd64 #288783
amd64 linux

00:02:55

passed gcc:jessie:amd64 #288778
amd64 linux

00:01:14

passed gcc:sid:amd64 #288781
amd64 linux

00:02:17

passed gcc:sid:i386 #288782
i386 linux

00:03:19

passed gcc:stretch:amd64 #288779
amd64 linux

00:01:49

passed gcc:xenial:amd64 #288784
amd64 linux

00:02:07

passed pkcs11:sid:amd64 #288789
amd64 linux

00:02:02

 
  Test
passed system:asan:sid:amd64 #288810
amd64 linux

00:08:44

passed system:gcc:bionic:amd64 #288808
amd64 linux

00:08:12

passed system:gcc:buster:amd64 #288798
i386 linux

00:07:53

passed system:gcc:centos6:amd64 #288863
amd64 linux

00:06:21

passed system:gcc:centos7:amd64 #288792
amd64 linux

00:07:42

passed system:gcc:fedora29:amd64 #288804
amd64 linux

00:07:51

passed system:gcc:jessie:amd64 #288794
amd64 linux

00:07:50

passed system:gcc:sid:amd64 #288800
amd64 linux

00:08:10

passed system:gcc:sid:i386 #288802
i386 linux

00:08:36

passed system:gcc:stretch:amd64 #288796
amd64 linux

00:07:53

passed system:gcc:xenial:amd64 #288806
amd64 linux

00:07:51

passed system:pkcs11:sid:amd64 #288813
amd64 linux

00:08:11

passed unit:asan:sid:amd64 #288811
linux amd64

00:00:57

passed unit:clang:stretch:amd64 #288812
amd64 linux

00:00:44

passed unit:gcc:bionic:amd64 #288809
amd64 linux

00:00:49

passed unit:gcc:buster:amd64 #288799
i386 linux

00:00:46

passed unit:gcc:centos6:amd64 #288791
amd64 linux

00:00:53

passed unit:gcc:centos7:amd64 #288793
amd64 linux

00:00:50

passed unit:gcc:fedora29:amd64 #288805
amd64 linux

00:00:45

passed unit:gcc:jessie:amd64 #288795
amd64 linux

00:00:29

passed unit:gcc:sid:amd64 #288801
amd64 linux

00:00:46

passed unit:gcc:sid:i386 #288803
i386 linux

00:00:44

passed unit:gcc:stretch:amd64 #288797
amd64 linux

00:00:47

passed unit:gcc:xenial:amd64 #288807
amd64 linux

00:00:46

passed unit:pkcs11:sid:amd64 #288814
amd64 linux

00:00:44

failed system:gcc:centos6:amd64 #288790
amd64 linux

00:08:10