Fix EBS info parsing + capture new field.
Fix EBS info parsing + capture new field.

New field is "EBS-optimized by default". We won't display it currently.

pctj101/ec2instances.info,BeardedSteve/ec2instances.info,pctj101/ec2instances.info,ksivask/ec2instances.info,wangbokun/ec2instances.info,trentonstrong/ec2instances.info,powdahound/ec2instances.info,mreeves1/ec2instances.info,mreeves1/ec2instances.info,powdahound/ec2instances.info,lantrix/ec2instances.info,wangbokun/ec2instances.info,roadtrippers/ec2instances.info,phorest/ec2instances.info,ksivask/ec2instances.info,BeardedSteve/ec2instances.info,pctj101/ec2instances.info,roadtrippers/ec2instances.info,trentonstrong/ec2instances.info,powdahound/ec2instances.info,lantrix/ec2instances.info,BeardedSteve/ec2instances.info,trentonstrong/ec2instances.info,roadtrippers/ec2instances.info,ksivask/ec2instances.info,mreeves1/ec2instances.info,phorest/ec2instances.info,wangbokun/ec2instances.info,phorest/ec2instances.info,lantrix/ec2instances.info