test: use .test domain for not found address

While it is extremely unlikely that `.fhqwhgads` will become a valid domain, we should, where possible, use one of the reserved domains for testing. Refs: https://tools.ietf.org/html/rfc2606 PR-URL: #38286 Refs: #38282 Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Rich Trott <rtrott@gmail.com> Reviewed-By: Luigi Pinca <luigipinca@gmail.com>

Author: richardlau

test/common/internet.js

@@ -24,7 +24,7 @@ const addresses = {
  MX_HOST: 'nodejs.org',
  // On some systems, .invalid returns a server failure/try again rather than
  // record not found. Use this to guarantee record not found.
- NOT_FOUND: 'come.on.fhqwhgads',
+ NOT_FOUND: 'come.on.fhqwhgads.test',
  // A host with SRV records registered
  SRV_HOST: '_jabber._tcp.google.com',
  // A host with PTR records registered