Split mDNS trace in mdns and mdns-stack

The current mdns stack (openscreen) is very verbose. Splitting
the tracing system to have:
- mdns -> adb usage of mdns logs.
- mdns-stack -> mdns implementation logs.

Test: NA
Bug: NA
Change-Id: Id4418f737ce7ed24bc5bbd828746d5c89ae39f64
4 files changed