Fix AWS life cycle test to allow images that have previously attached disks
Fix AWS life cycle test to allow images that have previously attached disks

Signed-off-by: Phan Le <f2c5995718b197bbd6f63c99e8aab6ee2af1c495@pivotal.io>

barthy1/bosh,barthy1/bosh,barthy1/bosh,barthy1/bosh