gst1: Use Gst.CLOCK_TIME_NONE to block for state changes in tests
gst1: Use Gst.CLOCK_TIME_NONE to block for state changes in tests

vrs01/mopidy,tkem/mopidy,mopidy/mopidy,vrs01/mopidy,ZenithDK/mopidy,kingosticks/mopidy,mokieyue/mopidy,mokieyue/mopidy,vrs01/mopidy,ZenithDK/mopidy,tkem/mopidy,ZenithDK/mopidy,tkem/mopidy,kingosticks/mopidy,mopidy/mopidy,mopidy/mopidy,adamcik/mopidy,jcass77/mopidy,jcass77/mopidy,jodal/mopidy,ZenithDK/mopidy,mokieyue/mopidy,tkem/mopidy,jodal/mopidy,mokieyue/mopidy,jodal/mopidy,kingosticks/mopidy,jcass77/mopidy,adamcik/mopidy,adamcik/mopidy,vrs01/mopidy