Make root hints consistent with authoritative data

The ns2 named instance in the "staticstub" system test is configured
with a single root hint commonly used in BIND system tests
(a.root-servers.nil with an address of 10.53.0.1), which is inconsistent
with authoritative data served by ns1.  This may cause intermittent
resolution failures, triggering false positives for the "staticstub"
system test.  Prevent this from happening by making ns1 serve data
corresponding to the contents of bin/tests/system/common/root.hint.

(cherry picked from commit 4b5e1da0)
45 jobs for !2215 with michal/staticstub-system-test-make-root-hints-consistent-with-authoritative-data-v9_14 in 15 minutes and 29 seconds (queued for 5 seconds)
detached
Status Job ID Name Coverage
  Precheck
passed 🐞:sid:amd64 #290961
amd64 linux

00:00:39

passed misc:sid:amd64 #290960
amd64 linux

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  Build
passed asan:sid:amd64 #290974
amd64 linux

00:01:55

passed clang:stretch:amd64 #290975
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passed clang:stretch:i386 #290976
i386 linux

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passed docs:sid:amd64 #290962
amd64 linux

00:00:53

passed gcc:alpine3.10:amd64 #290963
amd64 linux

00:03:16

passed gcc:bionic:amd64 #290973
amd64 linux

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passed gcc:buster:amd64 #290968
i386 linux

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passed gcc:centos6:amd64 #290964
amd64 linux

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passed gcc:centos7:amd64 #290965
amd64 linux

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passed gcc:fedora30:amd64 #290971
amd64 linux

00:03:01

passed gcc:jessie:amd64 #290966
amd64 linux

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passed gcc:sid:amd64 #290969
amd64 linux

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passed gcc:sid:i386 #290970
i386 linux

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passed gcc:stretch:amd64 #290967
amd64 linux

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passed gcc:xenial:amd64 #290972
amd64 linux

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passed pkcs11:sid:amd64 #290977
amd64 linux

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  Test
passed system:asan:sid:amd64 #291000
amd64 linux

00:10:24

passed system:gcc:alpine3.10:amd64 #290978
amd64 linux

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passed system:gcc:bionic:amd64 #290998
amd64 linux

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passed system:gcc:buster:amd64 #290988
i386 linux

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passed system:gcc:centos6:amd64 #290980
amd64 linux

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passed system:gcc:centos7:amd64 #290982
amd64 linux

00:09:41

passed system:gcc:fedora30:amd64 #290994
amd64 linux

00:10:23

passed system:gcc:jessie:amd64 #290984
amd64 linux

00:07:29

passed system:gcc:sid:amd64 #290990
amd64 linux

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passed system:gcc:sid:i386 #290992
i386 linux

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passed system:gcc:stretch:amd64 #290986
amd64 linux

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passed system:gcc:xenial:amd64 #290996
amd64 linux

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passed system:pkcs11:sid:amd64 #291003
linux amd64

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passed unit:asan:sid:amd64 #291001
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passed unit:clang:stretch:amd64 #291002
amd64 linux

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passed unit:gcc:alpine3.10:amd64 #290979
amd64 linux

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passed unit:gcc:bionic:amd64 #290999
amd64 linux

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passed unit:gcc:buster:amd64 #290989
i386 linux

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passed unit:gcc:centos6:amd64 #290981
amd64 linux

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passed unit:gcc:centos7:amd64 #290983
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passed unit:gcc:fedora30:amd64 #290995
amd64 linux

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passed unit:gcc:jessie:amd64 #290985
amd64 linux

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passed unit:gcc:sid:amd64 #290991
amd64 linux

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passed unit:gcc:sid:i386 #290993
i386 linux

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passed unit:gcc:stretch:amd64 #290987
amd64 linux

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passed unit:gcc:xenial:amd64 #290997
amd64 linux

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passed unit:pkcs11:sid:amd64 #291004
amd64 linux

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