Receive all the resolver info from ConnectivityService

Note that as of this change we still only program bionic with one
set of servers (TLS if available, locally assigned otherwise). This
will be remedied in a future change.

Test: ./system/netd/tests/runtests.sh
Test: manual testing of opportunistic and strictm mode works
Bug: 34953048
Bug: 64133961
Bug: 72345192
Change-Id: I6a0ec6672ce88e61118b34ed03818bbf53158103