tests: Exception messages on 2.6 and 2.7 differs
tests: Exception messages on 2.6 and 2.7 differs

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