Do all reboots serially
Do all reboots serially

We should be doing everything one at a time, to avoid having significant
portions of instances down at once.

j2sol/ursula,lihkin213/ursula,narengan/ursula,greghaynes/ursula,ddaskal/ursula,nirajdp76/ursula,narengan/ursula,channus/ursula,rongzhus/ursula,panxia6679/ursula,persistent-ursula/ursula,davidcusatis/ursula,fancyhe/ursula,panxia6679/ursula,ddaskal/ursula,kennjason/ursula,pgraziano/ursula,masteinhauser/ursula,ddaskal/ursula,ryshah/ursula,edtubillara/ursula,blueboxgroup/ursula,zrs233/ursula,blueboxgroup/ursula,edtubillara/ursula,nirajdp76/ursula,wupeiran/ursula,dlundquist/ursula,lihkin213/ursula,zrs233/ursula,twaldrop/ursula,j2sol/ursula,msambol/ursula,ddaskal/ursula,blueboxgroup/ursula,dlundquist/ursula,rongzhus/ursula,pgraziano/ursula,knandya/ursula,wupeiran/ursula,greghaynes/ursula,sivakom/ursula,greghaynes/ursula,fancyhe/ursula,sivakom/ursula,davidcusatis/ursula,channus/ursula,kennjason/ursula,wupeiran/ursula,kennjason/ursula,twaldrop/ursula,nirajdp76/ursula,wupeiran/ursula,dlundquist/ursula,channus/ursula,knandya/ursula,masteinhauser/ursula,zrs233/ursula,edtubillara/ursula,sivakom/ursula,twaldrop/ursula,panxia6679/ursula,ryshah/ursula,nirajdp76/ursula,ryshah/ursula,j2sol/ursula,narengan/ursula,twaldrop/ursula,msambol/ursula,lihkin213/ursula,davidcusatis/ursula,zrs233/ursula,pgraziano/ursula,j2sol/ursula,persistent-ursula/ursula,persistent-ursula/ursula,lihkin213/ursula,pgraziano/ursula,msambol/ursula,channus/ursula,blueboxgroup/ursula,ryshah/ursula,edtubillara/ursula,rongzhus/ursula,narengan/ursula,masteinhauser/ursula,fancyhe/ursula,persistent-ursula/ursula,rongzhus/ursula,fancyhe/ursula,knandya/ursula,panxia6679/ursula,masteinhauser/ursula,knandya/ursula