tests: Make test_ext discoverable
tests: Make test_ext discoverable

Classes in this test didn't have prefix Test

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