[sensu-percona] add db_arbiter host to test/setup
[sensu-percona] add db_arbiter host to test/setup

wupeiran/ursula,persistent-ursula/ursula,pgraziano/ursula,fancyhe/ursula,EricCrosson/ursula,jwaibel/ursula,MaheshIBM/ursula,narengan/ursula,pbannister/ursula,persistent-ursula/ursula,andrewrothstein/ursula,edtubillara/ursula,persistent-ursula/ursula,channus/ursula,knandya/ursula,panxia6679/ursula,greghaynes/ursula,rongzhus/ursula,dlundquist/ursula,zrs233/ursula,kennjason/ursula,ddaskal/ursula,rongzhus/ursula,ddaskal/ursula,edtubillara/ursula,dlundquist/ursula,edtubillara/ursula,jwaibel/ursula,retr0h/ursula,blueboxgroup/ursula,ryshah/ursula,blueboxjesse/ursula,sivakom/ursula,fancyhe/ursula,ryshah/ursula,wupeiran/ursula,ddaskal/ursula,knandya/ursula,pgraziano/ursula,paulczar/ursula,wupeiran/ursula,msambol/ursula,greghaynes/ursula,davidcusatis/ursula,j2sol/ursula,lihkin213/ursula,pbannister/ursula,nirajdp76/ursula,mjbrewer/ursula,greghaynes/ursula,lihkin213/ursula,nirajdp76/ursula,blueboxgroup/ursula,zrs233/ursula,twaldrop/ursula,nirajdp76/ursula,allomov/ursula,MaheshIBM/ursula,rongzhus/ursula,nirajdp76/ursula,andrewrothstein/ursula,blueboxjesse/ursula,knandya/ursula,ddaskal/ursula,narengan/ursula,panxia6679/ursula,allomov/ursula,fancyhe/ursula,wupeiran/ursula,msambol/ursula,kennjason/ursula,aldevigi/ursula,zrs233/ursula,ryshah/ursula,blueboxgroup/ursula,j2sol/ursula,narengan/ursula,panxia6679/ursula,andrewrothstein/ursula,kennjason/ursula,masteinhauser/ursula,sivakom/ursula,mjbrewer/ursula,knandya/ursula,EricCrosson/ursula,msambol/ursula,sivakom/ursula,persistent-ursula/ursula,edtubillara/ursula,j2sol/ursula,pbannister/ursula,fancyhe/ursula,mjbrewer/ursula,twaldrop/ursula,MaheshIBM/ursula,paulczar/ursula,aldevigi/ursula,masteinhauser/ursula,paulczar/ursula,twaldrop/ursula,pgraziano/ursula,jwaibel/ursula,panxia6679/ursula,blueboxgroup/ursula,lihkin213/ursula,davidcusatis/ursula,pgraziano/ursula,aldevigi/ursula,blueboxjesse/ursula,masteinhauser/ursula,channus/ursula,narengan/ursula,channus/ursula,j2sol/ursula,zrs233/ursula,channus/ursula,dlundquist/ursula,lihkin213/ursula,retr0h/ursula,davidcusatis/ursula,allomov/ursula,masteinhauser/ursula,EricCrosson/ursula,rongzhus/ursula,twaldrop/ursula,blueboxjesse/ursula,ryshah/ursula,retr0h/ursula