zeroconf: Use Avahi's host management by default
zeroconf: Use Avahi's host management by default

Fixes #1283

mopidy/mopidy,swak/mopidy,tkem/mopidy,kingosticks/mopidy,diandiankan/mopidy,mokieyue/mopidy,adamcik/mopidy,ali/mopidy,tkem/mopidy,jcass77/mopidy,ZenithDK/mopidy,ZenithDK/mopidy,mokieyue/mopidy,jmarsik/mopidy,kingosticks/mopidy,diandiankan/mopidy,jmarsik/mopidy,jmarsik/mopidy,mopidy/mopidy,jodal/mopidy,diandiankan/mopidy,mopidy/mopidy,quartz55/mopidy,adamcik/mopidy,bacontext/mopidy,quartz55/mopidy,vrs01/mopidy,bacontext/mopidy,mokieyue/mopidy,quartz55/mopidy,diandiankan/mopidy,swak/mopidy,vrs01/mopidy,tkem/mopidy,kingosticks/mopidy,vrs01/mopidy,bacontext/mopidy,swak/mopidy,swak/mopidy,bacontext/mopidy,ZenithDK/mopidy,ali/mopidy,tkem/mopidy,adamcik/mopidy,ZenithDK/mopidy,ali/mopidy,jcass77/mopidy,mokieyue/mopidy,vrs01/mopidy,ali/mopidy,quartz55/mopidy,jodal/mopidy,jodal/mopidy,jmarsik/mopidy,jcass77/mopidy