Comment 14 for bug 1638312

# ami-f4cc1de2 ubuntu/images/hvm-ssd/ubuntu-xenial-16.04-amd64-server-20170221
$ ec2metadata --ami-id
ami-f4cc1de2

$ dpkg-query --show cloud-init
cloud-init 0.7.9-48-g1c795b9-0ubuntu1~16.04.1

$ python3 -c 'from cloudinit import ec2_utils; print(ec2_utils.get_instance_metadata("latest")["iam"])'
{'info': {'Code': 'Success', 'InstanceProfileId': 'AIPAJ7VG3LHE4JOYDGNG6', 'InstanceProfileArn': 'arn:aws:iam::950047163771:instance-profile/smtest-ec2-ro', 'LastUpdated': '2017-03-08T19:15:50Z'}}

Notice that the 'security-credentials' entry is missing from the 'info' dict.