Update to Amazon Linux AMI 2016.03.3
Update to Amazon Linux AMI 2016.03.3

caremonkey/buildkite-aws-elastic-stack,holmesjr/elastic-ci-stack-for-aws,holmesjr/elastic-ci-stack-for-aws,caremonkey/buildkite-aws-elastic-stack,buildkite/elastic-ci-stack-for-aws