Fix more pylint violations
Fix more pylint violations

priestd09/mopidy,abarisain/mopidy,jodal/mopidy,kingosticks/mopidy,liamw9534/mopidy,vrs01/mopidy,bacontext/mopidy,bencevans/mopidy,vrs01/mopidy,SuperStarPL/mopidy,pacificIT/mopidy,ZenithDK/mopidy,ZenithDK/mopidy,jcass77/mopidy,bacontext/mopidy,dbrgn/mopidy,vrs01/mopidy,vrs01/mopidy,abarisain/mopidy,swak/mopidy,mokieyue/mopidy,tkem/mopidy,SuperStarPL/mopidy,jcass77/mopidy,ZenithDK/mopidy,bencevans/mopidy,rawdlite/mopidy,pacificIT/mopidy,quartz55/mopidy,glogiotatidis/mopidy,swak/mopidy,jodal/mopidy,ali/mopidy,hkariti/mopidy,ZenithDK/mopidy,hkariti/mopidy,mopidy/mopidy,priestd09/mopidy,woutervanwijk/mopidy,adamcik/mopidy,ali/mopidy,tkem/mopidy,swak/mopidy,bencevans/mopidy,adamcik/mopidy,rawdlite/mopidy,diandiankan/mopidy,hkariti/mopidy,mokieyue/mopidy,ali/mopidy,ali/mopidy,quartz55/mopidy,glogiotatidis/mopidy,woutervanwijk/mopidy,diandiankan/mopidy,diandiankan/mopidy,quartz55/mopidy,quartz55/mopidy,jmarsik/mopidy,rawdlite/mopidy,dbrgn/mopidy,liamw9534/mopidy,mopidy/mopidy,glogiotatidis/mopidy,SuperStarPL/mopidy,mokieyue/mopidy,mokieyue/mopidy,jcass77/mopidy,bacontext/mopidy,bacontext/mopidy,jmarsik/mopidy,pacificIT/mopidy,adamcik/mopidy,priestd09/mopidy,bencevans/mopidy,pacificIT/mopidy,hkariti/mopidy,glogiotatidis/mopidy,jodal/mopidy,swak/mopidy,dbrgn/mopidy,diandiankan/mopidy,tkem/mopidy,kingosticks/mopidy,tkem/mopidy,jmarsik/mopidy,kingosticks/mopidy,dbrgn/mopidy,jmarsik/mopidy,SuperStarPL/mopidy,mopidy/mopidy,rawdlite/mopidy