Make DescribeInstances display architectures
Make DescribeInstances display architectures

Fixes TOOLS-489

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