Keep listening for UDP responses after sending the next retry

Do the A/AAAA lookup in parallel for getaddrinfo

Create threads for each A/AAAA lookup.
The functionality is disabled for now.

Bug: 2609013
Bug: 135717624
Bug: 151698212
Test: atest

Bug: 135717624
Test: atest
Merged-In: I3c970b638fb763ea209a62624f23c5ea85370fe9

Change-Id: Ib2f6d1b0e0a6e6f525a280bdc70c7bca37ac851b
(cherry picked from commit 37b653be)