Update Vagrant evnironments to only have 1 worker
Update Vagrant evnironments to only have 1 worker

As Vagrant is really only a test environment, there is no need to use
more than 1 worker where possible.

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