test(ServiceDiscovery): AnswersContainsAdditionalRecords

When AnswersContainsAdditionalRecords is true, add the additional records to
the answers section and then clear the additional records section.

test/ServiceDiscoveryTest.cs

@@ -287,8 +287,8 @@ public void Discover_ServiceInstance_WithAnswersContainingAdditionRecords()
                 var answersCount = additionalRecordsCount +
                     1; // PTRRecord
 
-                Assert.AreEqual(additionalRecordsCount, discovered.AdditionalRecords.Count);
-                Assert.AreEqual(additionalRecordsCount + 1, discovered.Answers.Count);
+                Assert.AreEqual(0, discovered.AdditionalRecords.Count);
+                Assert.AreEqual(answersCount, discovered.Answers.Count);
             }
         }