Added testing for VumiRiakError
Added testing for VumiRiakError

harrissoerja/vumi,vishwaprakashmishra/xmatrix,TouK/vumi,harrissoerja/vumi,vishwaprakashmishra/xmatrix,TouK/vumi,TouK/vumi,harrissoerja/vumi,vishwaprakashmishra/xmatrix