Add vxlan support assertions
Add vxlan support assertions

This will protect against upgrading a cluster that is not ready for
vxlan.

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