Move doDns64Synthesis and doDns64ReverseLookup around am: c3f77721 am:...

Move doDns64Synthesis and doDns64ReverseLookup around am: c3f77721 am: e19b5455 am: 43ce928e am: c1cd40c0 am: e5d60cbc am: 4c8ae1c1

Original change: https://android-review.googlesource.com/c/platform/packages/modules/DnsResolver/+/2753510



Change-Id: I668828d2fc68c485eab89fb7a9c1f2932a8f3e42
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>