Implement the stop resolution with MdnsDiscoveryManager

The resolveService() uses new mdns backend if the
MdnsDiscoveryManager feature is enabled. So the new API
stopServiceResolution() should have new mdns backend
implementation as well.

Test: atest FrameworksNetTests
Change-Id: I591e78180f530daa701e0970860f7471f5f5fb9a
2 files changed