test: deflake test-dns

Prevent responses from being cached.
Fixes: #54124
PR-URL: #54902
Reviewed-By: Michael Dawson <midawson@redhat.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

Author: lpinca

test/parallel/test-dns.js

@@ -361,11 +361,11 @@ assert.throws(() => {
 constcases=[
 {method: 'resolveAny',
 answers: [
-{type: 'A',address: '1.2.3.4',ttl: 3333333333},
-{type: 'AAAA',address: '::42',ttl: 3333333333},
-{type: 'MX',priority: 42,exchange: 'foobar.com',ttl: 3333333333},
-{type: 'NS',value: 'foobar.org',ttl: 3333333333},
-{type: 'PTR',value: 'baz.org',ttl: 3333333333},
+{type: 'A',address: '1.2.3.4',ttl: 0},
+{type: 'AAAA',address: '::42',ttl: 0},
+{type: 'MX',priority: 42,exchange: 'foobar.com',ttl: 0},
+{type: 'NS',value: 'foobar.org',ttl: 0},
+{type: 'PTR',value: 'baz.org',ttl: 0},
 {
 type: 'SOA',
 nsname: 'ns1.example.com',
@@ -380,11 +380,11 @@ assert.throws(() => {
 
 {method: 'resolve4',
 options: {ttl: true},
-answers: [{type: 'A',address: '1.2.3.4',ttl: 3333333333}]},
+answers: [{type: 'A',address: '1.2.3.4',ttl: 0}]},
 
 {method: 'resolve6',
 options: {ttl: true},
-answers: [{type: 'AAAA',address: '::42',ttl: 3333333333}]},
+answers: [{type: 'AAAA',address: '::42',ttl: 0}]},
 
 {method: 'resolveSoa',
 answers: [
@@ -415,7 +415,7 @@ assert.throws(() => {
 (answer)=>Object.assign({ domain },answer)
 ),
 }),port,address);
-},cases.length));
+},cases.length*2-1));
 
 server.bind(0,common.mustCall(()=>{
 constaddress=server.address();