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 am: 3f012125

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



Change-Id: I9e659f6e7a59de3c37760796cd6ff2378613f9f9
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>