DescribeImages projected BootMode through aws.String unconditionally, so an
AMI recording none emitted "", which is outside the model enum. RegisterImage
takes BootMode as an optional input, so this is the normal path for an AMI
registered without one, not stale data. Set the member only when present.
ListAccessKeys and ListGroups built their results from a nil slice when
nothing matched. xmlutil drops a nil slice entirely rather than emitting an
empty element, so the response lost a member the model marks required. Start
both slices empty and non-nil.
Integration conformance drops from 18 violations to 15; the remainder are the
EC2 AccessDenied error-code findings, which are unrelated.
Julian Sommer
fae6b08acc