Comment 13 for bug 1638312

# ami-78b7166e ubuntu/images-testing/hvm-ssd/ubuntu-yakkety-daily-amd64-server-20170307
$ ec2metadata --ami-id
ami-78b7166e

After upgrade..

$ dpkg-query --show cloud-init
cloud-init 0.7.9-48-g1c795b9-0ubuntu1~16.10.1

$ python3 -c 'from cloudinit import ec2_utils; print(ec2_utils.get_instance_metadata("latest")["iam"])'
{'info': {'InstanceProfileId': 'AIPAJ7VG3LHE4JOYDGNG6', 'InstanceProfileArn': 'arn:aws:iam::950047163771:instance-profile/smtest-ec2-ro', 'Code': 'Success', 'LastUpdated': '2017-03-08T19:33:11Z'}}

Notice that the 'security-credentials' dictionary is not present.