test: fix test-dns-idna2008

[Trott]

The DNS server will sometimes return an IPv6 address (as seen in nightly
CI from time to time). Use family option to force IPv4.

Hide white-space changes in the diff to ignore all the code moved to accommodate line-wrapping at 80 chars.

This failed in node-daily-master last night. I'd like to fast-track. Please 👍 here if you are a Collaborator and agree this could/should be fast-tracked.

00:03:31 not ok 11 internet/test-dns-idna2008
00:03:31   ---
00:03:31   duration_ms: 1.15
00:03:31   severity: fail
00:03:31   exitcode: 1
00:03:31   stack: |-
00:03:31     assert.js:103
00:03:31       throw new AssertionError(obj);
00:03:31       ^
00:03:31     
00:03:31     AssertionError [ERR_ASSERTION]: Expected values to be strictly equal:
00:03:31     + actual - expected
00:03:31     
00:03:31     + '2a01:238:20a:202:1078::'
00:03:31     - '81.169.145.78'
00:03:31         at GetAddrInfoReqWrap.<anonymous> (/home/iojs/build/workspace/node-test-commit-custom-suites-freestyle/test/internet/test-dns-idna2008.js:32:10)
00:03:31         at GetAddrInfoReqWrap.callback (/home/iojs/build/workspace/node-test-commit-custom-suites-freestyle/test/common/index.js:364:15)
00:03:31         at GetAddrInfoReqWrap.onlookup [as oncomplete] (dns.js:68:8) {
00:03:31       generatedMessage: true,
00:03:31       code: 'ERR_ASSERTION',
00:03:31       actual: '2a01:238:20a:202:1078::',
00:03:31       expected: '81.169.145.78',
00:03:31       operator: 'strictEqual'
00:03:31     }
00:03:31   ...

Checklist

• make -j4 test (UNIX), or vcbuild test (Windows) passes
• commit message follows commit guidelines

[Trott]

Internet tests aren't run in our regular CI so here's a CI for internet tests run the same way we run them in node-daily-master: https://ci.nodejs.org/job/node-test-commit-custom-suites-freestyle/14228/ ✅

[Trott]

@nodejs/dns @nodejs/testing

(Hide whitespace in the diff because a lot of lines were moved to accommodate 80-char wrapping: https://github.com/nodejs/node/pull/33367/files?diff=unified&w=1)

[Trott]

Landed in 23a61eb