Update AMIs to latest and add sshuser for official Ubuntu images
Update AMIs to latest and add sshuser for official Ubuntu images

quantiply-fork/coopr,cdapio/coopr,cdapio/coopr,quantiply-fork/coopr,caskdata/coopr,caskdata/coopr,quantiply-fork/coopr,caskdata/coopr,quantiply-fork/coopr,cdapio/coopr,cdapio/coopr,caskdata/coopr,cdapio/coopr,caskdata/coopr