Even though mdnsresponder seems to allow us to use _adb_secure_connect
and _adb_secure_pairing as service names, these names violate the syntax
outlined in RFC6763, and may not be compatible with other dns-sd
implementations.
Also address some comments from a previous CL.
Bug: 154268895
Test: atest adbd_test
Change-Id: Ia872e976fc4276587b500a827a41d46d9dc755dd