Support mDns Multipacket Known-Answer Suppression

When a query packet is truncated, the responder should defer
the generation of a response until all packets have been received
and processed. If an answer present in the query packet's answer
section also appears in the responder's response, and the
known-answer's TTL exceeds half of the original TTL, suppress
the corresponding response.

Bug: 312657709
Test: atest FrameworksNetTests NsdManagerTest
      Passed DISTRIBUTED DUPLICATE SUPPRESSION and \
      MULTIPLE QUESTIONS - DISTRIBUTED DUPLICATE SUPPRESSION \
      test cases of BCT
Change-Id: I781cd813d46f7d0db267f3fe23a15a81ae319e51