Support direct install of Ubuntu cloud images
Support direct install of Ubuntu cloud images

Fixes TOOLS-142

vasiliykochergin/euca2ools,gholms/euca2ools,gholms/euca2ools,vasiliykochergin/euca2ools,jhajek/euca2ools,jhajek/euca2ools,nagyistoce/euca2ools,nagyistoce/euca2ools