In order for ClearLinux to run on the C5, M5, P3, H1 instance types,
kernel-aws needs to be configured to include the Amazon Elastic Network
Adapter as described in https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/
enhanced-networking-ena.html#enhanced-networking-ena-linux which incudes
link to source at https://github.com/amzn/amzn-drivers
with an AMI which includes
the ENA enabled kernel-aws.